./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw --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 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:14:42,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:14:42,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:14:42,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:14:42,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:14:42,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:14:42,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:14:42,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:14:42,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:14:42,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:14:42,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:14:42,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:14:42,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:14:42,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:14:42,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:14:42,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:14:42,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:14:42,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:14:42,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:14:42,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:14:42,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:14:42,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:14:42,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:14:42,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:14:42,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:14:42,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:14:42,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:14:42,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:14:42,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:14:42,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:14:42,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:14:42,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:14:42,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:14:42,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:14:42,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:14:42,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:14:42,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:14:42,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:14:42,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:14:42,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:14:42,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:14:42,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:14:42,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:14:42,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:14:42,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:14:42,815 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:14:42,816 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:14:42,816 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:14:42,816 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:14:42,817 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:14:42,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:14:42,825 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:14:42,826 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:14:42,827 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:14:42,827 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:14:42,828 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:14:42,828 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:14:42,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:14:42,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:14:42,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:14:42,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:14:42,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:14:42,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:14:42,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:14:42,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:14:42,831 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:14:42,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:14:42,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:14:42,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:14:42,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:14:42,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:14:42,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:14:42,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:42,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:14:42,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:14:42,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:14:42,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:14:42,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:14:42,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:14:42,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:14:42,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:14:42,839 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_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2021-10-20 06:14:43,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:14:43,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:14:43,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:14:43,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:14:43,211 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:14:43,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loop-invgen/nested6.i [2021-10-20 06:14:43,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/data/ef3065edd/7530d251e891402fa11b1b7d7cfd0fe8/FLAG14654b384 [2021-10-20 06:14:43,860 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:14:43,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/sv-benchmarks/c/loop-invgen/nested6.i [2021-10-20 06:14:43,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/data/ef3065edd/7530d251e891402fa11b1b7d7cfd0fe8/FLAG14654b384 [2021-10-20 06:14:44,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/data/ef3065edd/7530d251e891402fa11b1b7d7cfd0fe8 [2021-10-20 06:14:44,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:14:44,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:14:44,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:44,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:14:44,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:14:44,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81ec56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44, skipping insertion in model container [2021-10-20 06:14:44,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:14:44,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:14:44,433 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_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-10-20 06:14:44,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:44,473 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:14:44,485 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_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-10-20 06:14:44,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:44,504 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:14:44,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44 WrapperNode [2021-10-20 06:14:44,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:44,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:44,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:14:44,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:14:44,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:44,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:14:44,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:14:44,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:14:44,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:14:44,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:14:44,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:14:44,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:14:44,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (1/1) ... [2021-10-20 06:14:44,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:44,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:44,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:14:44,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:14:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:14:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:14:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:14:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:14:44,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:14:44,967 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-20 06:14:44,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:44 BoogieIcfgContainer [2021-10-20 06:14:44,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:14:44,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:14:44,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:14:44,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:14:44,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:14:44" (1/3) ... [2021-10-20 06:14:44,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634dab57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:44, skipping insertion in model container [2021-10-20 06:14:44,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:44" (2/3) ... [2021-10-20 06:14:44,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634dab57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:44, skipping insertion in model container [2021-10-20 06:14:44,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:44" (3/3) ... [2021-10-20 06:14:44,996 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2021-10-20 06:14:45,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:14:45,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 06:14:45,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:14:45,084 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 [2021-10-20 06:14:45,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 06:14:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 21 states have internal predecessors, (30), 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) [2021-10-20 06:14:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 06:14:45,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:45,127 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:45,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:45,136 INFO L82 PathProgramCache]: Analyzing trace with hash -885669119, now seen corresponding path program 1 times [2021-10-20 06:14:45,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:45,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280747569] [2021-10-20 06:14:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:45,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:45,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:45,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280747569] [2021-10-20 06:14:45,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280747569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:45,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:45,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:14:45,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161960631] [2021-10-20 06:14:45,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:45,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:45,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:45,496 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 21 states have internal predecessors, (30), 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 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:45,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:45,605 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2021-10-20 06:14:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:14:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-20 06:14:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:45,617 INFO L225 Difference]: With dead ends: 50 [2021-10-20 06:14:45,618 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 06:14:45,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 06:14:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2021-10-20 06:14:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-10-20 06:14:45,664 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2021-10-20 06:14:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:45,665 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-10-20 06:14:45,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-10-20 06:14:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:14:45,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:45,667 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:45,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:14:45,668 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:45,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:45,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1686703451, now seen corresponding path program 1 times [2021-10-20 06:14:45,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:45,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146039214] [2021-10-20 06:14:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:45,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:45,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:45,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146039214] [2021-10-20 06:14:45,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146039214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:45,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:45,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-20 06:14:45,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021340154] [2021-10-20 06:14:45,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:14:45,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:14:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:45,776 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-10-20 06:14:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:45,879 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-10-20 06:14:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:14:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-10-20 06:14:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:45,881 INFO L225 Difference]: With dead ends: 32 [2021-10-20 06:14:45,881 INFO L226 Difference]: Without dead ends: 30 [2021-10-20 06:14:45,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:14:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-20 06:14:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 15. [2021-10-20 06:14:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2021-10-20 06:14:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-20 06:14:45,888 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 9 [2021-10-20 06:14:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:45,889 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-20 06:14:45,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-10-20 06:14:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-10-20 06:14:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 06:14:45,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:45,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:45,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:14:45,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash -724341724, now seen corresponding path program 1 times [2021-10-20 06:14:45,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:45,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590437986] [2021-10-20 06:14:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:45,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:45,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:45,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590437986] [2021-10-20 06:14:45,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590437986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:45,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:45,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:14:45,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833498350] [2021-10-20 06:14:45,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:45,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:45,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:45,970 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) 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) [2021-10-20 06:14:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:46,051 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-10-20 06:14:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:14:46,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) 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 10 [2021-10-20 06:14:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:46,053 INFO L225 Difference]: With dead ends: 32 [2021-10-20 06:14:46,053 INFO L226 Difference]: Without dead ends: 30 [2021-10-20 06:14:46,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-20 06:14:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2021-10-20 06:14:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-10-20 06:14:46,083 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2021-10-20 06:14:46,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:46,084 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-10-20 06:14:46,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) 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) [2021-10-20 06:14:46,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-10-20 06:14:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-20 06:14:46,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:46,086 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:46,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 06:14:46,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1122860341, now seen corresponding path program 1 times [2021-10-20 06:14:46,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:46,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079667736] [2021-10-20 06:14:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:46,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:46,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:46,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079667736] [2021-10-20 06:14:46,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079667736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:14:46,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347065841] [2021-10-20 06:14:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:46,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:46,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:46,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:14:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:46,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 06:14:46,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:46,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347065841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:46,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 06:14:46,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 9 [2021-10-20 06:14:46,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527263745] [2021-10-20 06:14:46,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 06:14:46,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:46,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 06:14:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-20 06:14:46,609 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2021-10-20 06:14:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:46,779 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2021-10-20 06:14:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-20 06:14:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 14 [2021-10-20 06:14:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:46,784 INFO L225 Difference]: With dead ends: 74 [2021-10-20 06:14:46,784 INFO L226 Difference]: Without dead ends: 55 [2021-10-20 06:14:46,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:14:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-20 06:14:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 25. [2021-10-20 06:14:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2021-10-20 06:14:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-10-20 06:14:46,806 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 14 [2021-10-20 06:14:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:46,807 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-10-20 06:14:46,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2021-10-20 06:14:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-10-20 06:14:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 06:14:46,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:46,809 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:46,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:47,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:47,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:47,025 INFO L82 PathProgramCache]: Analyzing trace with hash -113403786, now seen corresponding path program 1 times [2021-10-20 06:14:47,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:47,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407980631] [2021-10-20 06:14:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:47,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:47,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:47,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407980631] [2021-10-20 06:14:47,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407980631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:14:47,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427456412] [2021-10-20 06:14:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:47,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:47,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:47,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:47,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 06:14:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:47,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 06:14:47,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:47,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:47,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427456412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:47,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793174202] [2021-10-20 06:14:47,343 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-20 06:14:47,344 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:14:47,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:14:47,354 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:14:47,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:14:47,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,393 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:47,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-20 06:14:47,397 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:47,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:14:47,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-20 06:14:47,437 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-20 06:14:47,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:47,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-20 06:14:47,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-20 06:14:47,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-20 06:14:47,459 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:47,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,471 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:47,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:47,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-20 06:14:47,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:14:47,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:14:47,489 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:47,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-20 06:14:47,501 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:47,501 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-20 06:14:47,515 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size [2021-10-20 06:14:47,521 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.0 percent of original size 96 [2021-10-20 06:14:47,532 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-20 06:14:47,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-20 06:14:47,555 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.9 percent of original size [2021-10-20 06:14:47,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-20 06:14:47,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,650 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.9 percent of original size [2021-10-20 06:14:47,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-20 06:14:47,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-20 06:14:47,679 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.9 percent of original size [2021-10-20 06:14:47,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-20 06:14:47,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,743 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-10-20 06:14:47,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-10-20 06:14:47,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,837 INFO L180 QuantifierPusher]: treesize reduction 30, result has 63.9 percent of original size [2021-10-20 06:14:47,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-20 06:14:47,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-20 06:14:47,862 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.1 percent of original size [2021-10-20 06:14:47,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-10-20 06:14:47,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,935 INFO L180 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-10-20 06:14:47,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-20 06:14:47,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:47,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-20 06:14:47,956 INFO L180 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-10-20 06:14:47,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-20 06:14:47,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:47,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:48,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-10-20 06:14:48,031 INFO L180 QuantifierPusher]: treesize reduction 30, result has 63.9 percent of original size [2021-10-20 06:14:48,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-20 06:14:48,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:48,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-20 06:14:48,055 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.1 percent of original size [2021-10-20 06:14:48,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-10-20 06:14:48,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,094 INFO L180 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-10-20 06:14:48,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-20 06:14:48,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:48,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-20 06:14:48,115 INFO L180 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-10-20 06:14:48,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-20 06:14:48,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:48,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-10-20 06:14:48,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:48,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-20 06:14:48,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:48,339 INFO L180 QuantifierPusher]: treesize reduction 38, result has 61.2 percent of original size [2021-10-20 06:14:48,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-20 06:14:48,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:48,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-20 06:14:48,358 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:14:49,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:49,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:14:49,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2021-10-20 06:14:49,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319622999] [2021-10-20 06:14:49,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-20 06:14:49,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-20 06:14:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-10-20 06:14:49,737 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-10-20 06:14:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:50,234 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-20 06:14:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-20 06:14:50,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 [2021-10-20 06:14:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:50,236 INFO L225 Difference]: With dead ends: 68 [2021-10-20 06:14:50,236 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:14:50,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1753.0ms TimeCoverageRelationStatistics Valid=330, Invalid=1832, Unknown=0, NotChecked=0, Total=2162 [2021-10-20 06:14:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:14:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:14:50,238 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) [2021-10-20 06:14:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:14:50,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-20 06:14:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:50,238 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:14:50,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-10-20 06:14:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:14:50,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:14:50,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:50,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:50,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:50,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:50,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:50,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:14:50,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:50,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-20 06:14:50,933 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-20 06:14:50,933 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-20 06:14:50,933 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-20 06:14:50,933 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 38) the Hoare annotation is: (let ((.cse2 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse0 (<= .cse2 ULTIMATE.start_main_~k~0)) (.cse1 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= .cse2 ULTIMATE.start_main_~j~0))))) [2021-10-20 06:14:50,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:14:50,933 INFO L857 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-20 06:14:50,934 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-20 06:14:50,934 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:14:50,934 INFO L853 garLoopResultBuilder]: At program point L33-3(lines 33 45) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1) (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1))) [2021-10-20 06:14:50,934 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 32) no Hoare annotation was computed. [2021-10-20 06:14:50,934 INFO L860 garLoopResultBuilder]: At program point L46(lines 24 48) the Hoare annotation is: true [2021-10-20 06:14:50,934 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~j~0 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0)) (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) 0) (= ULTIMATE.start_main_~i~0 0) .cse1 .cse2) (and .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 .cse2))) [2021-10-20 06:14:50,934 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-20 06:14:50,934 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-20 06:14:50,934 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 1 48) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~k~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= .cse0 ULTIMATE.start_main_~j~0))) [2021-10-20 06:14:50,935 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-20 06:14:50,935 INFO L860 garLoopResultBuilder]: At program point L47(lines 24 48) the Hoare annotation is: true [2021-10-20 06:14:50,935 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2021-10-20 06:14:50,935 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-20 06:14:50,935 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 1 48) the Hoare annotation is: (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2021-10-20 06:14:50,935 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-10-20 06:14:50,939 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:14:50,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:14:50 BoogieIcfgContainer [2021-10-20 06:14:50,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:14:50,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:14:50,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:14:50,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:14:50,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:44" (3/4) ... [2021-10-20 06:14:50,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:14:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-20 06:14:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-20 06:14:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:14:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:14:51,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:14:51,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:14:51,006 INFO L168 Benchmark]: Toolchain (without parser) took 6798.81 ms. Allocated memory was 86.0 MB in the beginning and 155.2 MB in the end (delta: 69.2 MB). Free memory was 48.9 MB in the beginning and 101.4 MB in the end (delta: -52.5 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,007 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 65.6 MB in the beginning and 65.5 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:51,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.33 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 48.7 MB in the beginning and 103.7 MB in the end (delta: -55.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.43 ms. Allocated memory is still 127.9 MB. Free memory was 103.7 MB in the beginning and 102.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,008 INFO L168 Benchmark]: Boogie Preprocessor took 23.62 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 101.2 MB in the end (delta: 792.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,008 INFO L168 Benchmark]: RCFGBuilder took 404.86 ms. Allocated memory is still 127.9 MB. Free memory was 101.2 MB in the beginning and 89.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,009 INFO L168 Benchmark]: TraceAbstraction took 5966.77 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 89.0 MB in the beginning and 104.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,009 INFO L168 Benchmark]: Witness Printer took 48.67 ms. Allocated memory is still 155.2 MB. Free memory was 104.5 MB in the beginning and 101.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:51,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 65.6 MB in the beginning and 65.5 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.33 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 48.7 MB in the beginning and 103.7 MB in the end (delta: -55.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.43 ms. Allocated memory is still 127.9 MB. Free memory was 103.7 MB in the beginning and 102.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.62 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 101.2 MB in the end (delta: 792.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 404.86 ms. Allocated memory is still 127.9 MB. Free memory was 101.2 MB in the beginning and 89.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5966.77 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 89.0 MB in the beginning and 104.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 16.1 GB. * Witness Printer took 48.67 ms. Allocated memory is still 155.2 MB. Free memory was 104.5 MB in the beginning and 101.4 MB in the end (delta: 3.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5868.8ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 36.4ms, AutomataDifference: 1019.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 474.9ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 164 SDslu, 87 SDs, 0 SdLazy, 346 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 322.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1936.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 58 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 47 NumberOfFragments, 181 HoareAnnotationTreeSize, 8 FomulaSimplifications, 6839 FormulaSimplificationTreeSizeReduction, 136.6ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 1577 FormulaSimplificationTreeSizeReductionInter, 329.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 39.9ms SsaConstructionTime, 158.1ms SatisfiabilityAnalysisTime, 897.7ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 330 SizeOfPredicates, 7 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 8/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((k <= n && j + 1 <= n) && !(0 == cond)) && 2 * i <= j) && n <= k - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((2 * i <= k && k + 1 <= n) && j + 1 <= n) && !(0 == cond)) && 2 * i <= j - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((k <= n && n <= j) && !(0 == cond)) && n <= k) || ((k <= n && i == 0) && n <= k) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((k <= n && j + 1 <= n) && !(0 == cond)) && 2 * i <= j) && n <= k - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((k <= n && j + 1 <= n + i) && j * -1 / -2 <= 0) && i == 0) && 2 * i <= j) && n <= k) || (((k <= n && !(0 == cond)) && 2 * i <= j) && n <= k) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((2 * i <= k && j + 1 <= n) && i == 0) && k <= j) || ((((k <= n && 2 * i <= k) && j + 1 <= n) && !(0 == cond)) && 2 * i <= j) RESULT: Ultimate proved your program to be correct! [2021-10-20 06:14:51,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b0d43e-61b2-4fdb-a3c6-28a65c032c30/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...