./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG --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 d3c61dee0c4c48de96844df391dc470a843cae078bb175116ed4a6b789669168 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:44:32,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:44:32,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:44:32,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:44:32,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:44:32,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:44:32,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:44:32,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:44:32,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:44:32,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:44:32,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:44:32,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:44:32,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:44:32,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:44:32,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:44:32,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:44:32,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:44:32,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:44:32,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:44:32,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:44:32,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:44:32,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:44:32,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:44:32,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:44:32,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:44:32,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:44:32,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:44:32,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:44:32,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:44:32,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:44:32,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:44:32,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:44:32,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:44:32,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:44:32,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:44:32,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:44:32,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:44:32,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:44:32,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:44:32,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:44:32,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:44:32,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:44:32,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:44:32,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:44:32,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:44:32,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:44:32,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:44:32,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:44:32,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:44:32,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:44:32,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:44:32,760 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:44:32,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:44:32,761 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:44:32,761 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:44:32,761 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:44:32,762 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:44:32,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:44:32,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:44:32,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:44:32,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:44:32,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:44:32,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:44:32,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:44:32,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:44:32,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:44:32,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:44:32,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:44:32,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:44:32,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:44:32,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:44:32,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:44:32,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:32,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:44:32,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:44:32,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:44:32,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:44:32,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:44:32,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:44:32,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:44:32,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:44:32,769 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_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3c61dee0c4c48de96844df391dc470a843cae078bb175116ed4a6b789669168 [2021-10-29 05:44:33,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:44:33,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:44:33,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:44:33,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:44:33,050 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:44:33,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2021-10-29 05:44:33,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/data/f0d411b23/2965d03d076042bc9b8bdaa45f423460/FLAG94735d761 [2021-10-29 05:44:33,630 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:44:33,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2021-10-29 05:44:33,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/data/f0d411b23/2965d03d076042bc9b8bdaa45f423460/FLAG94735d761 [2021-10-29 05:44:34,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/data/f0d411b23/2965d03d076042bc9b8bdaa45f423460 [2021-10-29 05:44:34,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:44:34,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:44:34,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:34,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:44:34,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:44:34,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51be67ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34, skipping insertion in model container [2021-10-29 05:44:34,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:44:34,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:44:34,217 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_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] [2021-10-29 05:44:34,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:34,245 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:44:34,256 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_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] [2021-10-29 05:44:34,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:34,279 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:44:34,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34 WrapperNode [2021-10-29 05:44:34,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:34,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:34,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:44:34,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:44:34,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:34,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:44:34,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:44:34,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:44:34,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:44:34,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:44:34,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:44:34,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:44:34,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (1/1) ... [2021-10-29 05:44:34,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:34,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:34,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:44:34,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:44:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:44:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:44:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:44:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:44:34,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:44:34,813 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-10-29 05:44:34,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:34 BoogieIcfgContainer [2021-10-29 05:44:34,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:44:34,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:44:34,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:44:34,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:44:34,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:44:34" (1/3) ... [2021-10-29 05:44:34,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5209b7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:34, skipping insertion in model container [2021-10-29 05:44:34,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:34" (2/3) ... [2021-10-29 05:44:34,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5209b7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:34, skipping insertion in model container [2021-10-29 05:44:34,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:34" (3/3) ... [2021-10-29 05:44:34,829 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.c [2021-10-29 05:44:34,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:44:34,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-29 05:44:34,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:44:34,913 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 [2021-10-29 05:44:34,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-29 05:44:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 47 states have internal predecessors, (60), 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) [2021-10-29 05:44:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:44:34,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:34,966 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:44:34,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash 5618680, now seen corresponding path program 1 times [2021-10-29 05:44:34,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:34,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827616892] [2021-10-29 05:44:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:34,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:35,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:35,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827616892] [2021-10-29 05:44:35,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827616892] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:35,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:35,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:44:35,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319471746] [2021-10-29 05:44:35,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:44:35,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:44:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:44:35,350 INFO L87 Difference]: Start difference. First operand has 48 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 47 states have internal predecessors, (60), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:35,525 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2021-10-29 05:44:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:44:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:44:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:35,538 INFO L225 Difference]: With dead ends: 92 [2021-10-29 05:44:35,538 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 05:44:35,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 05:44:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-29 05:44:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 41 states have internal predecessors, (42), 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) [2021-10-29 05:44:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-29 05:44:35,594 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 4 [2021-10-29 05:44:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:35,595 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-29 05:44:35,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-29 05:44:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:44:35,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:35,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:44:35,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:44:35,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1104739931, now seen corresponding path program 1 times [2021-10-29 05:44:35,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:35,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905770150] [2021-10-29 05:44:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:35,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:35,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:44:35,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491072190] [2021-10-29 05:44:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:35,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:35,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:35,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:35,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:44:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:35,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:44:35,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:35,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:35,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:35,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905770150] [2021-10-29 05:44:35,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:35,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491072190] [2021-10-29 05:44:35,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491072190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:35,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:35,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:44:35,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624331075] [2021-10-29 05:44:35,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:44:35,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:44:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:35,909 INFO L87 Difference]: Start difference. First operand 42 states and 42 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) [2021-10-29 05:44:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:36,034 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-10-29 05:44:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:44:36,035 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 [2021-10-29 05:44:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:36,036 INFO L225 Difference]: With dead ends: 83 [2021-10-29 05:44:36,037 INFO L226 Difference]: Without dead ends: 81 [2021-10-29 05:44:36,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:44:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-29 05:44:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 46. [2021-10-29 05:44:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 45 states have internal predecessors, (46), 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) [2021-10-29 05:44:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-10-29 05:44:36,069 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 6 [2021-10-29 05:44:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:36,070 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-10-29 05:44:36,071 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) [2021-10-29 05:44:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-10-29 05:44:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:44:36,072 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:36,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:36,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 05:44:36,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-29 05:44:36,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 798307678, now seen corresponding path program 1 times [2021-10-29 05:44:36,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:36,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629817025] [2021-10-29 05:44:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:36,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:36,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:44:36,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107667289] [2021-10-29 05:44:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:36,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:36,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:36,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:44:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:36,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:44:36,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:36,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:36,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:36,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629817025] [2021-10-29 05:44:36,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:36,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107667289] [2021-10-29 05:44:36,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107667289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:36,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:36,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:44:36,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571422468] [2021-10-29 05:44:36,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:44:36,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:44:36,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:36,561 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-29 05:44:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:36,697 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-10-29 05:44:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:44:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 8 [2021-10-29 05:44:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:36,702 INFO L225 Difference]: With dead ends: 81 [2021-10-29 05:44:36,702 INFO L226 Difference]: Without dead ends: 77 [2021-10-29 05:44:36,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:44:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-29 05:44:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-10-29 05:44:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.25) internal successors, (60), 56 states have internal predecessors, (60), 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) [2021-10-29 05:44:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2021-10-29 05:44:36,725 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 8 [2021-10-29 05:44:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:36,725 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2021-10-29 05:44:36,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-29 05:44:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2021-10-29 05:44:36,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:44:36,727 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:36,727 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:36,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:44:36,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:36,942 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1625310975, now seen corresponding path program 1 times [2021-10-29 05:44:36,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:36,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819349479] [2021-10-29 05:44:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:36,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:36,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:44:36,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200054736] [2021-10-29 05:44:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:36,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:36,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:36,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:36,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:44:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:37,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:44:37,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:37,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:37,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:37,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819349479] [2021-10-29 05:44:37,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:37,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200054736] [2021-10-29 05:44:37,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200054736] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:37,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:37,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:44:37,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419065964] [2021-10-29 05:44:37,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:44:37,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:44:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:37,264 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-10-29 05:44:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:37,667 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2021-10-29 05:44:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:44:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 [2021-10-29 05:44:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:37,669 INFO L225 Difference]: With dead ends: 114 [2021-10-29 05:44:37,669 INFO L226 Difference]: Without dead ends: 88 [2021-10-29 05:44:37,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:44:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-29 05:44:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2021-10-29 05:44:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 73 states have internal predecessors, (81), 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) [2021-10-29 05:44:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-10-29 05:44:37,680 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 10 [2021-10-29 05:44:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:37,681 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-10-29 05:44:37,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-10-29 05:44:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-10-29 05:44:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:44:37,682 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:37,682 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:37,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:44:37,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:37,910 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1632620878, now seen corresponding path program 1 times [2021-10-29 05:44:37,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:37,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533733109] [2021-10-29 05:44:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:37,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:37,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:44:37,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749286686] [2021-10-29 05:44:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:37,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:37,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:37,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:37,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:44:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:44:38,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:38,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:38,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:38,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533733109] [2021-10-29 05:44:38,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:38,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749286686] [2021-10-29 05:44:38,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749286686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:44:38,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1777095024] [2021-10-29 05:44:38,338 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-29 05:44:38,338 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:44:38,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:44:38,347 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:44:38,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:44:38,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:44:38,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:44:38,426 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:44:38,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:44:38,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-29 05:44:38,491 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-29 05:44:38,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,540 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 [2021-10-29 05:44:38,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:44:38,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:44:38,544 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:38,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,557 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:38,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,568 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,577 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:38,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,579 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:38,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:38,589 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,648 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:38,687 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 [2021-10-29 05:44:38,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:44:38,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:44:38,706 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,729 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-29 05:44:38,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:44:38,733 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:44:38,733 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-29 05:44:38,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:44:38,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-29 05:44:38,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-29 05:44:38,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 05:44:38,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-10-29 05:44:38,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-29 05:44:38,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-10-29 05:44:38,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-29 05:44:38,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:38,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 259 [2021-10-29 05:44:38,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:38,983 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:44:38,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:44:38,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:44:39,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:44:39,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 05:44:39,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-29 05:44:39,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-29 05:44:39,079 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:44:39,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:44:39,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:44:39,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:44:39,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,431 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-29 05:44:39,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:44:39,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:39,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:44:39,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:39,578 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:44:41,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:41,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:44:41,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-29 05:44:41,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768024748] [2021-10-29 05:44:41,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:44:41,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:41,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:44:41,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:44:41,803 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 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) [2021-10-29 05:44:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:42,553 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-10-29 05:44:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:44:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 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 17 [2021-10-29 05:44:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:42,555 INFO L225 Difference]: With dead ends: 82 [2021-10-29 05:44:42,555 INFO L226 Difference]: Without dead ends: 74 [2021-10-29 05:44:42,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-10-29 05:44:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-29 05:44:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-10-29 05:44:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 65 states have internal predecessors, (70), 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) [2021-10-29 05:44:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-10-29 05:44:42,567 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 17 [2021-10-29 05:44:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:42,568 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-10-29 05:44:42,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 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) [2021-10-29 05:44:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-10-29 05:44:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:44:42,569 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:42,569 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:42,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:44:42,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:42,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1285756817, now seen corresponding path program 1 times [2021-10-29 05:44:42,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:42,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216467554] [2021-10-29 05:44:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:42,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:42,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:44:42,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381223531] [2021-10-29 05:44:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:42,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:42,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:42,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:42,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:44:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:42,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:44:42,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:43,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:43,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:43,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216467554] [2021-10-29 05:44:43,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:43,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381223531] [2021-10-29 05:44:43,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381223531] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:44:43,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [143696114] [2021-10-29 05:44:43,187 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-29 05:44:43,187 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:44:43,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:44:43,190 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:44:43,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:44:43,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,222 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:44:43,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:44:43,226 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:44:43,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:44:43,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-29 05:44:43,264 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-29 05:44:43,275 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:43,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,277 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,286 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:43,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,290 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:43,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,304 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:43,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:43,314 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,329 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 [2021-10-29 05:44:43,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:44:43,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:44:43,336 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:43,373 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 [2021-10-29 05:44:43,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:44:43,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:44:43,381 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,390 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,394 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-29 05:44:43,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:44:43,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:44:43,398 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-29 05:44:43,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:44:43,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-29 05:44:43,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-29 05:44:43,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 05:44:43,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 330 [2021-10-29 05:44:43,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 306 [2021-10-29 05:44:43,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,522 INFO L185 QuantifierPusher]: treesize reduction 63, result has 80.5 percent of original size 260 [2021-10-29 05:44:43,532 INFO L180 QuantifierPusher]: treesize reduction 65, result has 81.7 percent of original size [2021-10-29 05:44:43,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-29 05:44:43,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-10-29 05:44:43,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,631 INFO L185 QuantifierPusher]: treesize reduction 36, result has 72.3 percent of original size 94 [2021-10-29 05:44:43,636 INFO L180 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-10-29 05:44:43,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:44:43,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:44:43,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 05:44:43,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-29 05:44:43,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-29 05:44:43,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,709 INFO L185 QuantifierPusher]: treesize reduction 36, result has 72.3 percent of original size 94 [2021-10-29 05:44:43,717 INFO L180 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-10-29 05:44:43,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:44:43,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:44:43,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,933 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-29 05:44:43,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:44:43,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:43,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:44:43,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:43,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:44,055 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:44:46,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:46,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:44:46,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-29 05:44:46,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478487383] [2021-10-29 05:44:46,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:44:46,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:46,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:44:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:44:46,374 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-10-29 05:44:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:46,526 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-10-29 05:44:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:44:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 [2021-10-29 05:44:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:46,528 INFO L225 Difference]: With dead ends: 74 [2021-10-29 05:44:46,528 INFO L226 Difference]: Without dead ends: 72 [2021-10-29 05:44:46,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-10-29 05:44:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-29 05:44:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-10-29 05:44:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.15) internal successors, (69), 65 states have internal predecessors, (69), 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) [2021-10-29 05:44:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-29 05:44:46,538 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 19 [2021-10-29 05:44:46,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:46,539 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-29 05:44:46,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-10-29 05:44:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-29 05:44:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:44:46,540 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:46,540 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:46,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:44:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:46,741 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:44:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 596469692, now seen corresponding path program 1 times [2021-10-29 05:44:46,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:46,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118304421] [2021-10-29 05:44:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:46,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:46,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:44:46,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503097969] [2021-10-29 05:44:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:46,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:46,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:46,753 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:46,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 05:44:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:46,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 05:44:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:47,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:47,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:47,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118304421] [2021-10-29 05:44:47,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:44:47,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503097969] [2021-10-29 05:44:47,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503097969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:44:47,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1060588745] [2021-10-29 05:44:47,831 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-29 05:44:47,831 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:44:47,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:44:47,832 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:44:47,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:44:47,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,844 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:44:47,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:44:47,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:44:47,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:44:47,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-29 05:44:47,865 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-10-29 05:44:47,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,890 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 [2021-10-29 05:44:47,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:44:47,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:44:47,893 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:47,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,906 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:47,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,919 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:47,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,929 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:44:47,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:44:47,939 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:47,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:44:47,967 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 [2021-10-29 05:44:47,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:44:47,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:44:47,972 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:47,978 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:47,981 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-29 05:44:47,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:44:47,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:44:47,985 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-29 05:44:47,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:44:48,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-29 05:44:48,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-29 05:44:48,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 05:44:48,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-10-29 05:44:48,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-10-29 05:44:48,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-10-29 05:44:48,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-10-29 05:44:48,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 273 [2021-10-29 05:44:48,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,157 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:44:48,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:44:48,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:44:48,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:44:48,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 05:44:48,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-29 05:44:48,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-29 05:44:48,225 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:44:48,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:44:48,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:44:48,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:44:48,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,402 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-29 05:44:48,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:44:48,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:44:48,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:44:48,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-29 05:44:48,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:44:48,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:44:48,726 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:45:03,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:45:03,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:45:03,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-29 05:45:03,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230653096] [2021-10-29 05:45:03,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:45:03,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:45:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-10-29 05:45:03,335 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-10-29 05:45:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:04,402 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2021-10-29 05:45:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:45:04,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 28 [2021-10-29 05:45:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:04,404 INFO L225 Difference]: With dead ends: 105 [2021-10-29 05:45:04,405 INFO L226 Difference]: Without dead ends: 103 [2021-10-29 05:45:04,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2021-10-29 05:45:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-29 05:45:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2021-10-29 05:45:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.1466666666666667) internal successors, (86), 80 states have internal predecessors, (86), 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) [2021-10-29 05:45:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-10-29 05:45:04,419 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 28 [2021-10-29 05:45:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:04,420 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-10-29 05:45:04,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-10-29 05:45:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-10-29 05:45:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 05:45:04,421 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:04,421 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:04,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:45:04,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2021-10-29 05:45:04,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:45:04,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:04,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1976881759, now seen corresponding path program 1 times [2021-10-29 05:45:04,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:04,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118799506] [2021-10-29 05:45:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:04,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:04,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:45:04,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289434600] [2021-10-29 05:45:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:04,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:45:04,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:45:04,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:45:04,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 05:45:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:04,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 05:45:04,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:45:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:05,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:45:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:05,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:05,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118799506] [2021-10-29 05:45:05,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:45:05,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289434600] [2021-10-29 05:45:05,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289434600] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:45:05,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2000228564] [2021-10-29 05:45:05,942 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-29 05:45:05,942 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:45:05,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:45:05,943 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:45:05,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:45:05,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:05,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:45:05,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:05,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:45:05,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:45:05,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:05,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:45:05,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-29 05:45:05,984 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-10-29 05:45:05,991 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:05,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:05,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:05,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:05,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:05,994 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:06,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:06,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:06,002 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,021 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 [2021-10-29 05:45:06,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:45:06,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:45:06,023 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,030 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:06,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:06,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:06,032 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,038 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:06,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:06,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:06,040 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:06,064 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 [2021-10-29 05:45:06,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:45:06,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:45:06,069 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,073 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,075 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-29 05:45:06,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:45:06,078 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:45:06,078 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-29 05:45:06,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:45:06,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-29 05:45:06,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-29 05:45:06,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 05:45:06,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-29 05:45:06,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-10-29 05:45:06,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,158 INFO L185 QuantifierPusher]: treesize reduction 18, result has 92.6 percent of original size 224 [2021-10-29 05:45:06,164 INFO L180 QuantifierPusher]: treesize reduction 20, result has 92.7 percent of original size [2021-10-29 05:45:06,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-10-29 05:45:06,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-10-29 05:45:06,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,218 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:45:06,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:45:06,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:45:06,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:45:06,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 05:45:06,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-29 05:45:06,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-29 05:45:06,263 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:45:06,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:45:06,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:45:06,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:45:06,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,440 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-29 05:45:06,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:45:06,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:45:06,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:06,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-29 05:45:06,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:45:06,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:06,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-29 05:45:06,886 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:45:26,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:45:26,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:45:26,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-29 05:45:26,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463710777] [2021-10-29 05:45:26,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:45:26,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:45:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-10-29 05:45:26,199 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 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) [2021-10-29 05:45:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:28,530 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2021-10-29 05:45:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:45:28,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 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) Word has length 30 [2021-10-29 05:45:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:28,531 INFO L225 Difference]: With dead ends: 134 [2021-10-29 05:45:28,531 INFO L226 Difference]: Without dead ends: 132 [2021-10-29 05:45:28,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2021-10-29 05:45:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-29 05:45:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2021-10-29 05:45:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 97 states have internal predecessors, (106), 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) [2021-10-29 05:45:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2021-10-29 05:45:28,551 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 30 [2021-10-29 05:45:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:28,551 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2021-10-29 05:45:28,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 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) [2021-10-29 05:45:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2021-10-29 05:45:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 05:45:28,552 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:28,553 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-29 05:45:28,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:45:28,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2021-10-29 05:45:28,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:45:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -774379650, now seen corresponding path program 2 times [2021-10-29 05:45:28,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:28,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726881039] [2021-10-29 05:45:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:28,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:28,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:45:28,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116242553] [2021-10-29 05:45:28,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:45:28,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:45:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:45:28,798 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:45:28,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 05:45:30,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 05:45:30,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:45:30,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-29 05:45:30,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:45:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:45:33,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:45:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 05:45:34,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:34,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726881039] [2021-10-29 05:45:34,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:45:34,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116242553] [2021-10-29 05:45:34,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116242553] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:45:34,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [539389426] [2021-10-29 05:45:34,338 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-29 05:45:34,339 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:45:34,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:45:34,339 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:45:34,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:45:34,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:45:34,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:45:34,356 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:45:34,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:45:34,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-29 05:45:34,366 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-29 05:45:34,373 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:34,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,375 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,399 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 [2021-10-29 05:45:34,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:45:34,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:45:34,401 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:34,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,411 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,417 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:34,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,419 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:45:34,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:45:34,429 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:45:34,453 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 [2021-10-29 05:45:34,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:45:34,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:45:34,457 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,464 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-29 05:45:34,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:45:34,467 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:45:34,467 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-29 05:45:34,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:45:34,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-29 05:45:34,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-29 05:45:34,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-29 05:45:34,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-10-29 05:45:34,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-29 05:45:34,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-10-29 05:45:34,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-29 05:45:34,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-10-29 05:45:34,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-29 05:45:34,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 05:45:34,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-29 05:45:34,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-29 05:45:34,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214 [2021-10-29 05:45:34,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-10-29 05:45:34,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,725 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:45:34,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:45:34,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:45:34,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:45:34,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 05:45:34,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-29 05:45:34,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-29 05:45:34,773 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-29 05:45:34,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:45:34,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 05:45:34,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:45:34,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,970 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-29 05:45:34,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:45:34,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:45:34,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:45:34,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:34,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:35,044 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:45:37,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:45:37,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:45:37,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2021-10-29 05:45:37,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598125193] [2021-10-29 05:45:37,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 05:45:37,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 05:45:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2021-10-29 05:45:37,008 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-10-29 05:45:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:41,981 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2021-10-29 05:45:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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 30 [2021-10-29 05:45:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:41,982 INFO L225 Difference]: With dead ends: 98 [2021-10-29 05:45:41,982 INFO L226 Difference]: Without dead ends: 70 [2021-10-29 05:45:41,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-10-29 05:45:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-29 05:45:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-29 05:45:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 69 states have internal predecessors, (71), 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) [2021-10-29 05:45:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2021-10-29 05:45:41,995 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 30 [2021-10-29 05:45:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:41,995 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2021-10-29 05:45:41,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-10-29 05:45:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2021-10-29 05:45:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-29 05:45:41,997 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:41,998 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:42,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:45:42,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:45:42,202 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:45:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -22951460, now seen corresponding path program 2 times [2021-10-29 05:45:42,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:42,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600595456] [2021-10-29 05:45:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:42,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:42,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:45:42,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059121319] [2021-10-29 05:45:42,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:45:42,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:45:42,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:45:42,219 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:45:42,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 05:45:43,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 05:45:43,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:45:43,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-29 05:45:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:45:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-29 05:45:54,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:46:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-29 05:46:01,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:46:01,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600595456] [2021-10-29 05:46:01,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:46:01,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059121319] [2021-10-29 05:46:01,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059121319] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:46:01,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:46:01,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 25 [2021-10-29 05:46:01,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709904522] [2021-10-29 05:46:01,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:46:01,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:46:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:46:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=427, Unknown=5, NotChecked=0, Total=600 [2021-10-29 05:46:01,175 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2021-10-29 05:46:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:46:04,133 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-10-29 05:46:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:46:04,134 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 50 [2021-10-29 05:46:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:46:04,135 INFO L225 Difference]: With dead ends: 70 [2021-10-29 05:46:04,135 INFO L226 Difference]: Without dead ends: 64 [2021-10-29 05:46:04,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=235, Invalid=572, Unknown=5, NotChecked=0, Total=812 [2021-10-29 05:46:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-29 05:46:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-29 05:46:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 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) [2021-10-29 05:46:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-10-29 05:46:04,150 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2021-10-29 05:46:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:46:04,150 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-10-29 05:46:04,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2021-10-29 05:46:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-10-29 05:46:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-29 05:46:04,153 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:46:04,153 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:46:04,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:46:04,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2021-10-29 05:46:04,361 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:46:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:46:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 346213938, now seen corresponding path program 2 times [2021-10-29 05:46:04,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:46:04,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524005265] [2021-10-29 05:46:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:46:04,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:46:04,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:46:04,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611771064] [2021-10-29 05:46:04,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:46:04,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:46:04,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:46:04,375 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:46:04,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 05:46:05,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-29 05:46:05,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:46:05,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 05:46:05,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:46:40,361 WARN L207 SmtUtils]: Spent 13.31 s on a formula simplification that was a NOOP. DAG size: 41 [2021-10-29 05:46:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-29 05:46:50,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:46:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-29 05:46:55,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:46:55,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524005265] [2021-10-29 05:46:55,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:46:55,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611771064] [2021-10-29 05:46:55,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611771064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:46:55,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:46:55,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 14] imperfect sequences [] total 25 [2021-10-29 05:46:55,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138327404] [2021-10-29 05:46:55,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-29 05:46:55,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:46:55,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-29 05:46:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=436, Unknown=1, NotChecked=0, Total=600 [2021-10-29 05:46:55,874 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 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) [2021-10-29 05:47:25,584 WARN L207 SmtUtils]: Spent 10.04 s on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-10-29 05:47:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:30,857 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-10-29 05:47:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:47:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 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) Word has length 63 [2021-10-29 05:47:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:30,859 INFO L225 Difference]: With dead ends: 64 [2021-10-29 05:47:30,859 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:47:30,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=271, Invalid=598, Unknown=1, NotChecked=0, Total=870 [2021-10-29 05:47:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:47:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:47:30,860 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) [2021-10-29 05:47:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:47:30,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2021-10-29 05:47:30,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:30,861 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:47:30,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 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) [2021-10-29 05:47:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:47:30,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:47:30,863 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:30,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:47:31,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2021-10-29 05:47:31,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:47:31,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:31,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,681 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,682 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~a~0 20) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,682 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,682 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~a~0 20) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,682 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,682 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~a~0 20) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,682 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,682 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~a~0 20) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,682 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,683 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 39 40) the Hoare annotation is: (and (<= ULTIMATE.start_main_~a~0 20) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,683 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,683 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0))) (= (+ (* 6 ULTIMATE.start_main_~a~0) (* 2 ULTIMATE.start_main_~y~0) 10) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) (* 2 ULTIMATE.start_main_~z~0))) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-29 05:47:35,683 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,683 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (= (+ (* 6 ULTIMATE.start_main_~a~0) (* 2 ULTIMATE.start_main_~y~0) 10) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) (* 2 ULTIMATE.start_main_~z~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,684 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,684 INFO L857 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,684 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,684 INFO L853 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-29 05:47:35,684 INFO L857 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,685 INFO L853 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_main_~y~0 7) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (= ULTIMATE.start_main_~n~0 1)) (and (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (+ 7 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (* 9 ULTIMATE.start_main_~n~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-10-29 05:47:35,685 INFO L857 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,685 INFO L853 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (and (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-10-29 05:47:35,685 INFO L857 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-10-29 05:47:35,685 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,686 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,686 INFO L853 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-10-29 05:47:35,686 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,686 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,686 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,686 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,686 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,687 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,687 INFO L857 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,687 INFO L857 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,687 INFO L857 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-10-29 05:47:35,687 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:47:35,687 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,688 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~a~0 20)) (.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse3 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) .cse1 .cse2 .cse3) (and .cse0 (= (+ (* 6 ULTIMATE.start_main_~a~0) (* 2 ULTIMATE.start_main_~y~0) 10) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) (* 2 ULTIMATE.start_main_~z~0))) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-29 05:47:35,688 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 46) no Hoare annotation was computed. [2021-10-29 05:47:35,688 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,688 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 05:47:35,691 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2021-10-29 05:47:35,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:47:35,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:47:35 BoogieIcfgContainer [2021-10-29 05:47:35,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:47:35,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:47:35,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:47:35,719 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:47:35,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:34" (3/4) ... [2021-10-29 05:47:35,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:47:35,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-29 05:47:35,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:47:35,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:47:35,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:47:35,774 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:47:35,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:47:35,775 INFO L168 Benchmark]: Toolchain (without parser) took 181744.10 ms. Allocated memory was 102.8 MB in the beginning and 232.8 MB in the end (delta: 130.0 MB). Free memory was 73.1 MB in the beginning and 113.1 MB in the end (delta: -40.0 MB). Peak memory consumption was 90.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,775 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:35,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.56 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 73.1 MB in the beginning and 107.0 MB in the end (delta: -33.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.51 ms. Allocated memory is still 132.1 MB. Free memory was 107.0 MB in the beginning and 105.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,776 INFO L168 Benchmark]: Boogie Preprocessor took 25.49 ms. Allocated memory is still 132.1 MB. Free memory was 105.2 MB in the beginning and 104.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,776 INFO L168 Benchmark]: RCFGBuilder took 466.68 ms. Allocated memory is still 132.1 MB. Free memory was 104.0 MB in the beginning and 90.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,777 INFO L168 Benchmark]: TraceAbstraction took 180900.78 ms. Allocated memory was 132.1 MB in the beginning and 232.8 MB in the end (delta: 100.7 MB). Free memory was 89.3 MB in the beginning and 117.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,777 INFO L168 Benchmark]: Witness Printer took 55.88 ms. Allocated memory is still 232.8 MB. Free memory was 117.3 MB in the beginning and 113.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:35,778 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 102.8 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.56 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 73.1 MB in the beginning and 107.0 MB in the end (delta: -33.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.51 ms. Allocated memory is still 132.1 MB. Free memory was 107.0 MB in the beginning and 105.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.49 ms. Allocated memory is still 132.1 MB. Free memory was 105.2 MB in the beginning and 104.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 466.68 ms. Allocated memory is still 132.1 MB. Free memory was 104.0 MB in the beginning and 90.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 180900.78 ms. Allocated memory was 132.1 MB in the beginning and 232.8 MB in the end (delta: 100.7 MB). Free memory was 89.3 MB in the beginning and 117.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. * Witness Printer took 55.88 ms. Allocated memory is still 232.8 MB. Free memory was 117.3 MB in the beginning and 113.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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 - 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, 48 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 180.7s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 835 SDslu, 532 SDs, 0 SdLazy, 910 SolverSat, 329 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 26.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 673 GetRequests, 454 SyntacticMatches, 12 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 105.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=8, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 140 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 61 NumberOfFragments, 622 HoareAnnotationTreeSize, 12 FomulaSimplifications, 5842 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 2882 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 75.3s InterpolantComputationTime, 265 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 505 ConstructedInterpolants, 22 QuantifiedInterpolants, 6899 SizeOfPredicates, 87 NumberOfNonLiveVariables, 923 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 392/462 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 11 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((1 == cond && z * x == 6 * (a * x) + 12 * x) && 6 * a + 2 * y + 10 == a * z + 2 * z) && z == 6 * n + 6) && x == n * n * n) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((y == 3 * n + 3 * (n * n) + 1 && 6 * a + 2 * y + 10 == a * z + 2 * z) && !(0 == cond)) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 20 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a <= 20 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) && z == 6 * n + 6 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 20 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((y == 7 && 6 + 12 * y + 18 * x == z * y + 2 * z) && !(0 == cond)) && z == 6 * n + 6) && n == 1)) || (((z + y == 7 + 3 * (n * n) + 9 * n && 1 == cond) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((y == 3 * n + 3 * (n * n) + 1 && !(0 == cond)) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 20 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((a <= 20 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) || (((((a <= 20 && 6 * a + 2 * y + 10 == a * z + 2 * z) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 20 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (6 + 12 * y + 18 * x == z * y + 2 * z && !(0 == cond)) && z == 6 * n + 6 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:47:35,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d97b47ec-fc9a-46b7-ae3d-df64ef9602d0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...