./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c9e504dbddc7dcee5c37c545c0593dfdbc10dce ..................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c9e504dbddc7dcee5c37c545c0593dfdbc10dce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:45:15,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:45:15,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:45:15,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:45:15,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:45:15,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:45:15,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:45:15,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:45:15,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:45:15,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:45:15,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:45:15,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:45:15,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:45:15,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:45:15,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:45:15,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:45:15,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:45:15,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:45:15,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:45:15,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:45:15,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:45:15,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:45:15,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:45:15,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:45:15,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:45:15,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:45:15,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:45:15,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:45:15,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:45:15,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:45:15,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:45:15,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:45:15,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:45:15,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:45:15,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:45:15,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:45:15,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:45:15,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:45:15,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:45:15,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:45:15,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:45:15,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:45:15,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:45:15,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:45:15,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:45:15,894 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:45:15,894 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:45:15,894 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:45:15,894 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:45:15,895 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:45:15,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:45:15,903 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:45:15,904 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:45:15,904 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:45:15,905 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:45:15,905 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:45:15,905 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:45:15,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:45:15,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:45:15,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:45:15,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:45:15,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:45:15,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:45:15,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:45:15,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:45:15,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:45:15,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:45:15,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:45:15,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:45:15,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:45:15,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:45:15,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:45:15,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:45:15,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:45:15,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:45:15,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:45:15,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:45:15,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:45:15,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:45:15,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:45:15,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:45:15,914 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_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c9e504dbddc7dcee5c37c545c0593dfdbc10dce [2021-10-13 06:45:16,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:45:16,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:45:16,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:45:16,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:45:16,289 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:45:16,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem14_label25.c [2021-10-13 06:45:16,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/9a121f3b8/6db818b087ea40788b974bea9529c439/FLAGe0bf3b07d [2021-10-13 06:45:17,129 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:45:17,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/sv-benchmarks/c/eca-rers2012/Problem14_label25.c [2021-10-13 06:45:17,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/9a121f3b8/6db818b087ea40788b974bea9529c439/FLAGe0bf3b07d [2021-10-13 06:45:17,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/9a121f3b8/6db818b087ea40788b974bea9529c439 [2021-10-13 06:45:17,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:45:17,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:45:17,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:45:17,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:45:17,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:45:17,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:45:17" (1/1) ... [2021-10-13 06:45:17,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aed94c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:17, skipping insertion in model container [2021-10-13 06:45:17,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:45:17" (1/1) ... [2021-10-13 06:45:17,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:45:17,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:45:17,712 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_08849c33-729f-4b4f-9da5-18f3904ded14/sv-benchmarks/c/eca-rers2012/Problem14_label25.c[6534,6547] [2021-10-13 06:45:18,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:45:18,058 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:45:18,121 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_08849c33-729f-4b4f-9da5-18f3904ded14/sv-benchmarks/c/eca-rers2012/Problem14_label25.c[6534,6547] [2021-10-13 06:45:18,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:45:18,293 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:45:18,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18 WrapperNode [2021-10-13 06:45:18,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:45:18,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:45:18,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:45:18,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:45:18,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:45:18,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:45:18,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:45:18,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:45:18,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:45:18,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:45:18,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:45:18,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:45:18,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (1/1) ... [2021-10-13 06:45:18,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:45:18,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:18,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:45:18,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:45:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:45:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:45:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:45:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:45:34,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:45:34,597 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:45:34,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:34 BoogieIcfgContainer [2021-10-13 06:45:34,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:45:34,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:45:34,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:45:34,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:45:34,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:45:17" (1/3) ... [2021-10-13 06:45:34,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0a8b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:45:34, skipping insertion in model container [2021-10-13 06:45:34,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:18" (2/3) ... [2021-10-13 06:45:34,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0a8b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:45:34, skipping insertion in model container [2021-10-13 06:45:34,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:34" (3/3) ... [2021-10-13 06:45:34,616 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label25.c [2021-10-13 06:45:34,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:45:34,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:45:34,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:45:34,710 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:45:34,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:45:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 06:45:34,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:45:34,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 06:45:34,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:45:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:45:34,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1065582829, now seen corresponding path program 1 times [2021-10-13 06:45:34,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:45:34,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929089281] [2021-10-13 06:45:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:34,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:45:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:35,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:45:35,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929089281] [2021-10-13 06:45:35,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929089281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:45:35,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:45:35,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:45:35,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901871764] [2021-10-13 06:45:35,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:45:35,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:45:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:45:35,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:45:35,049 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:45:35,200 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-10-13 06:45:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:45:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-13 06:45:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:45:35,212 INFO L225 Difference]: With dead ends: 29 [2021-10-13 06:45:35,213 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 06:45:35,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:45:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 06:45:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-13 06:45:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 06:45:35,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-10-13 06:45:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:45:35,256 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 06:45:35,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 06:45:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:45:35,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:45:35,258 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2021-10-13 06:45:35,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:45:35,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:45:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:45:35,259 INFO L82 PathProgramCache]: Analyzing trace with hash 87871197, now seen corresponding path program 1 times [2021-10-13 06:45:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:45:35,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516111583] [2021-10-13 06:45:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:35,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:45:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:37,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:45:37,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516111583] [2021-10-13 06:45:37,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516111583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:45:37,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898299616] [2021-10-13 06:45:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:37,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:37,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:37,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:45:37,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:45:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:37,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 06:45:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:29,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 06:49:29,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627888760] [2021-10-13 06:49:29,870 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 06:49:29,870 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 06:49:29,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 06:49:29,881 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 06:49:29,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 06:49:29,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:29,931 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:49:29,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:29,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 06:49:29,933 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:49:29,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:29,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 06:49:29,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 06:49:29,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:49:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:49:29,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:49:29,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 06:49:29,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:29,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:49:29,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:30,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:49:30,001 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 06:49:30,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:49:30,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:30,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:49:30,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 06:49:30,047 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 06:49:30,048 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:149, output treesize:152 [2021-10-13 06:49:30,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:30,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:49:30,277 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 06:49:30,280 INFO L168 Benchmark]: Toolchain (without parser) took 252949.63 ms. Allocated memory was 134.2 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 93.6 MB in the beginning and 826.2 MB in the end (delta: -732.6 MB). Peak memory consumption was 667.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:30,281 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 134.2 MB. Free memory is still 111.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:49:30,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 961.28 ms. Allocated memory is still 134.2 MB. Free memory was 93.4 MB in the beginning and 85.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:30,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 157.78 ms. Allocated memory is still 134.2 MB. Free memory was 85.3 MB in the beginning and 75.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:30,283 INFO L168 Benchmark]: Boogie Preprocessor took 147.66 ms. Allocated memory is still 134.2 MB. Free memory was 75.8 MB in the beginning and 69.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:30,283 INFO L168 Benchmark]: RCFGBuilder took 15999.10 ms. Allocated memory was 134.2 MB in the beginning and 755.0 MB in the end (delta: 620.8 MB). Free memory was 69.9 MB in the beginning and 472.0 MB in the end (delta: -402.1 MB). Peak memory consumption was 238.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:30,284 INFO L168 Benchmark]: TraceAbstraction took 235674.10 ms. Allocated memory was 755.0 MB in the beginning and 1.5 GB in the end (delta: 780.1 MB). Free memory was 471.1 MB in the beginning and 826.2 MB in the end (delta: -355.2 MB). Peak memory consumption was 425.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:30,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 134.2 MB. Free memory is still 111.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 961.28 ms. Allocated memory is still 134.2 MB. Free memory was 93.4 MB in the beginning and 85.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 157.78 ms. Allocated memory is still 134.2 MB. Free memory was 85.3 MB in the beginning and 75.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 147.66 ms. Allocated memory is still 134.2 MB. Free memory was 75.8 MB in the beginning and 69.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 15999.10 ms. Allocated memory was 134.2 MB in the beginning and 755.0 MB in the end (delta: 620.8 MB). Free memory was 69.9 MB in the beginning and 472.0 MB in the end (delta: -402.1 MB). Peak memory consumption was 238.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 235674.10 ms. Allocated memory was 755.0 MB in the beginning and 1.5 GB in the end (delta: 780.1 MB). Free memory was 471.1 MB in the beginning and 826.2 MB in the end (delta: -355.2 MB). Peak memory consumption was 425.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 06:49:30,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:49:32,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:49:32,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:49:33,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:49:33,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:49:33,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:49:33,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:49:33,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:49:33,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:49:33,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:49:33,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:49:33,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:49:33,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:49:33,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:49:33,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:49:33,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:49:33,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:49:33,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:49:33,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:49:33,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:49:33,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:49:33,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:49:33,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:49:33,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:49:33,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:49:33,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:49:33,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:49:33,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:49:33,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:49:33,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:49:33,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:49:33,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:49:33,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:49:33,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:49:33,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:49:33,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:49:33,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:49:33,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:49:33,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:49:33,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:49:33,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:49:33,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:49:33,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:49:33,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:49:33,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:49:33,200 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:49:33,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:49:33,201 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:49:33,201 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:49:33,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:49:33,202 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:49:33,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:49:33,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:49:33,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:49:33,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:49:33,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:49:33,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:49:33,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:49:33,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:49:33,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:49:33,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:49:33,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:49:33,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:49:33,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:49:33,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:49:33,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:49:33,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:49:33,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:49:33,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:49:33,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:49:33,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:49:33,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:49:33,209 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:49:33,209 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:49:33,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:49:33,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:49:33,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:49:33,210 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c9e504dbddc7dcee5c37c545c0593dfdbc10dce [2021-10-13 06:49:33,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:49:33,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:49:33,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:49:33,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:49:33,643 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:49:33,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem14_label25.c [2021-10-13 06:49:33,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/39e112647/291ca0c7540b45fa8f0163c6a935f81a/FLAG7e771054f [2021-10-13 06:49:34,427 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:49:34,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/sv-benchmarks/c/eca-rers2012/Problem14_label25.c [2021-10-13 06:49:34,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/39e112647/291ca0c7540b45fa8f0163c6a935f81a/FLAG7e771054f [2021-10-13 06:49:34,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/data/39e112647/291ca0c7540b45fa8f0163c6a935f81a [2021-10-13 06:49:34,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:49:34,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:49:34,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:49:34,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:49:34,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:49:34,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:34" (1/1) ... [2021-10-13 06:49:34,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bfcc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:34, skipping insertion in model container [2021-10-13 06:49:34,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:34" (1/1) ... [2021-10-13 06:49:34,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:49:34,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:49:34,989 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_08849c33-729f-4b4f-9da5-18f3904ded14/sv-benchmarks/c/eca-rers2012/Problem14_label25.c[6534,6547] [2021-10-13 06:49:35,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:49:35,276 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:49:35,324 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_08849c33-729f-4b4f-9da5-18f3904ded14/sv-benchmarks/c/eca-rers2012/Problem14_label25.c[6534,6547] [2021-10-13 06:49:35,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:49:35,527 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:49:35,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35 WrapperNode [2021-10-13 06:49:35,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:49:35,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:49:35,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:49:35,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:49:35,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:49:35,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:49:35,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:49:35,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:49:35,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:49:35,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:49:35,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:49:35,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:49:35,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (1/1) ... [2021-10-13 06:49:35,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:49:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:49:35,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:49:35,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:49:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:49:39,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:49:39,803 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:49:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:39 BoogieIcfgContainer [2021-10-13 06:49:39,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:49:39,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:49:39,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:49:39,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:49:39,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:49:34" (1/3) ... [2021-10-13 06:49:39,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:49:39, skipping insertion in model container [2021-10-13 06:49:39,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:35" (2/3) ... [2021-10-13 06:49:39,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:49:39, skipping insertion in model container [2021-10-13 06:49:39,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:39" (3/3) ... [2021-10-13 06:49:39,816 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label25.c [2021-10-13 06:49:39,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:49:39,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:49:39,895 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:49:39,904 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:49:39,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:49:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 06:49:39,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:39,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:39,947 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:49:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times [2021-10-13 06:49:39,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:39,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016682851] [2021-10-13 06:49:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:39,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:39,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:39,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:40,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:49:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:40,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:49:40,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:49:40,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:49:41,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:41,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016682851] [2021-10-13 06:49:41,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016682851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:41,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:41,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:49:41,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045069290] [2021-10-13 06:49:41,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:49:41,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:49:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:49:41,121 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:51,151 INFO L93 Difference]: Finished difference Result 866 states and 1574 transitions. [2021-10-13 06:49:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:49:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 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 64 [2021-10-13 06:49:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:51,174 INFO L225 Difference]: With dead ends: 866 [2021-10-13 06:49:51,175 INFO L226 Difference]: Without dead ends: 538 [2021-10-13 06:49:51,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:49:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-13 06:49:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 360. [2021-10-13 06:49:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2021-10-13 06:49:51,257 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 64 [2021-10-13 06:49:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:51,259 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2021-10-13 06:49:51,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2021-10-13 06:49:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-13 06:49:51,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:51,269 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:51,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:51,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:51,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:49:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1360526043, now seen corresponding path program 1 times [2021-10-13 06:49:51,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:51,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675373548] [2021-10-13 06:49:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:51,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:51,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:51,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:51,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:49:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:51,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:49:51,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:49:52,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:49:53,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:49:53,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675373548] [2021-10-13 06:49:53,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675373548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:53,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:53,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:49:53,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181169975] [2021-10-13 06:49:53,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:49:53,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:49:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:49:53,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:49:53,705 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:58,873 INFO L93 Difference]: Finished difference Result 1430 states and 2032 transitions. [2021-10-13 06:49:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:49:58,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 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 143 [2021-10-13 06:49:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:58,880 INFO L225 Difference]: With dead ends: 1430 [2021-10-13 06:49:58,880 INFO L226 Difference]: Without dead ends: 1072 [2021-10-13 06:49:58,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:49:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-13 06:49:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-10-13 06:49:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.3165266106442577) internal successors, (1410), 1071 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1410 transitions. [2021-10-13 06:49:58,949 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1410 transitions. Word has length 143 [2021-10-13 06:49:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:58,950 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1410 transitions. [2021-10-13 06:49:58,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1410 transitions. [2021-10-13 06:49:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-10-13 06:49:58,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:58,963 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:49:58,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:59,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:49:59,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:49:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash 315690194, now seen corresponding path program 1 times [2021-10-13 06:49:59,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:49:59,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411105947] [2021-10-13 06:49:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:59,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:49:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:49:59,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:49:59,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:49:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:59,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:49:59,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:50:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:50:00,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:50:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:50:05,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:50:05,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411105947] [2021-10-13 06:50:05,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411105947] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:50:05,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:50:05,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:50:05,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700812870] [2021-10-13 06:50:05,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:50:05,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:50:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:50:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:50:05,699 INFO L87 Difference]: Start difference. First operand 1072 states and 1410 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:50:12,728 INFO L93 Difference]: Finished difference Result 2498 states and 3356 transitions. [2021-10-13 06:50:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:50:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 3 states have internal predecessors, (337), 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 200 [2021-10-13 06:50:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:50:12,739 INFO L225 Difference]: With dead ends: 2498 [2021-10-13 06:50:12,739 INFO L226 Difference]: Without dead ends: 1606 [2021-10-13 06:50:12,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:50:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-13 06:50:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2021-10-13 06:50:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.3115264797507789) internal successors, (2105), 1605 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2105 transitions. [2021-10-13 06:50:12,789 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2105 transitions. Word has length 200 [2021-10-13 06:50:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:50:12,791 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2105 transitions. [2021-10-13 06:50:12,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2105 transitions. [2021-10-13 06:50:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-10-13 06:50:12,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:12,805 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:12,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:13,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:50:13,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash -361690344, now seen corresponding path program 1 times [2021-10-13 06:50:13,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:50:13,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584186248] [2021-10-13 06:50:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:50:13,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:50:13,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:50:13,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:50:13,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 06:50:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:50:13,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:50:13,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:50:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-13 06:50:14,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:50:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-13 06:50:14,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:50:14,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584186248] [2021-10-13 06:50:14,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584186248] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:50:14,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:50:14,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:50:14,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523939886] [2021-10-13 06:50:14,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:50:14,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:50:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:50:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:50:14,765 INFO L87 Difference]: Start difference. First operand 1606 states and 2105 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:50:19,661 INFO L93 Difference]: Finished difference Result 4456 states and 6001 transitions. [2021-10-13 06:50:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:50:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 221 [2021-10-13 06:50:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:50:19,682 INFO L225 Difference]: With dead ends: 4456 [2021-10-13 06:50:19,682 INFO L226 Difference]: Without dead ends: 3030 [2021-10-13 06:50:19,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:50:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-13 06:50:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2496. [2021-10-13 06:50:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.2509018036072144) internal successors, (3121), 2495 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3121 transitions. [2021-10-13 06:50:19,761 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3121 transitions. Word has length 221 [2021-10-13 06:50:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:50:19,762 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3121 transitions. [2021-10-13 06:50:19,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3121 transitions. [2021-10-13 06:50:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-13 06:50:19,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:19,766 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:19,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:19,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:50:19,980 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1544246203, now seen corresponding path program 1 times [2021-10-13 06:50:19,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:50:19,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453506242] [2021-10-13 06:50:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:50:19,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:50:19,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:50:19,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:50:20,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 06:50:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:50:20,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:50:20,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:50:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-13 06:50:22,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:50:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-13 06:50:23,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:50:23,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453506242] [2021-10-13 06:50:23,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453506242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:50:23,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:50:23,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 06:50:23,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13346951] [2021-10-13 06:50:23,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:50:23,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:50:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:50:23,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:50:23,600 INFO L87 Difference]: Start difference. First operand 2496 states and 3121 transitions. Second operand has 6 states, 6 states have (on average 52.166666666666664) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:50:28,823 INFO L93 Difference]: Finished difference Result 5226 states and 6512 transitions. [2021-10-13 06:50:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:50:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.166666666666664) internal successors, (313), 5 states have internal predecessors, (313), 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 235 [2021-10-13 06:50:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:50:28,845 INFO L225 Difference]: With dead ends: 5226 [2021-10-13 06:50:28,845 INFO L226 Difference]: Without dead ends: 2852 [2021-10-13 06:50:28,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:50:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-10-13 06:50:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2496. [2021-10-13 06:50:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.0945891783567134) internal successors, (2731), 2495 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2731 transitions. [2021-10-13 06:50:28,922 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2731 transitions. Word has length 235 [2021-10-13 06:50:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:50:28,922 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2731 transitions. [2021-10-13 06:50:28,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.166666666666664) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2731 transitions. [2021-10-13 06:50:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-10-13 06:50:28,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:28,930 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:28,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:29,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:50:29,145 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:29,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:29,146 INFO L82 PathProgramCache]: Analyzing trace with hash 671357395, now seen corresponding path program 1 times [2021-10-13 06:50:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:50:29,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242252115] [2021-10-13 06:50:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:50:29,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:50:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:50:29,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:50:29,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 06:50:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:50:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:50:30,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:50:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-13 06:50:32,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:50:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-13 06:50:36,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:50:36,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242252115] [2021-10-13 06:50:36,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242252115] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:50:36,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:50:36,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:50:36,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382363701] [2021-10-13 06:50:36,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:50:36,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:50:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:50:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:50:36,050 INFO L87 Difference]: Start difference. First operand 2496 states and 2731 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:50:40,484 INFO L93 Difference]: Finished difference Result 5524 states and 6075 transitions. [2021-10-13 06:50:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:50:40,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 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 368 [2021-10-13 06:50:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:50:40,501 INFO L225 Difference]: With dead ends: 5524 [2021-10-13 06:50:40,502 INFO L226 Difference]: Without dead ends: 3208 [2021-10-13 06:50:40,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:50:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-10-13 06:50:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2852. [2021-10-13 06:50:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 1.0887407927043142) internal successors, (3104), 2851 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3104 transitions. [2021-10-13 06:50:40,579 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3104 transitions. Word has length 368 [2021-10-13 06:50:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:50:40,580 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 3104 transitions. [2021-10-13 06:50:40,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:40,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3104 transitions. [2021-10-13 06:50:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-10-13 06:50:40,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:40,601 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:40,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:40,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:50:40,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1937770354, now seen corresponding path program 1 times [2021-10-13 06:50:40,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:50:40,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740218100] [2021-10-13 06:50:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:50:40,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:50:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:50:40,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:50:40,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 06:50:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:50:42,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 06:50:42,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:50:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 247 proven. 416 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-13 06:50:52,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:51:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 594 proven. 69 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-13 06:51:19,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:51:19,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740218100] [2021-10-13 06:51:19,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740218100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:51:19,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1440915603] [2021-10-13 06:51:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:51:19,763 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:51:19,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:51:19,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:51:19,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 06:51:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:51:24,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:51:24,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:51:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-13 06:51:26,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:51:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-13 06:51:27,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1440915603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:51:27,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 06:51:27,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [10, 10] total 25 [2021-10-13 06:51:27,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599244721] [2021-10-13 06:51:27,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:51:27,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:51:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:51:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-13 06:51:27,955 INFO L87 Difference]: Start difference. First operand 2852 states and 3104 transitions. Second operand has 10 states, 10 states have (on average 25.3) internal successors, (253), 10 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:51:31,588 INFO L93 Difference]: Finished difference Result 5980 states and 6514 transitions. [2021-10-13 06:51:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:51:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.3) internal successors, (253), 10 states have internal predecessors, (253), 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 502 [2021-10-13 06:51:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:51:31,620 INFO L225 Difference]: With dead ends: 5980 [2021-10-13 06:51:31,620 INFO L226 Difference]: Without dead ends: 3308 [2021-10-13 06:51:31,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 1982 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1233.4ms TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-10-13 06:51:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2021-10-13 06:51:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 2852. [2021-10-13 06:51:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 1.0880392844615925) internal successors, (3102), 2851 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3102 transitions. [2021-10-13 06:51:31,711 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3102 transitions. Word has length 502 [2021-10-13 06:51:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:51:31,712 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 3102 transitions. [2021-10-13 06:51:31,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.3) internal successors, (253), 10 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3102 transitions. [2021-10-13 06:51:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-10-13 06:51:31,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:51:31,735 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:51:31,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 06:51:31,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-13 06:51:32,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 06:51:32,154 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:51:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:51:32,155 INFO L82 PathProgramCache]: Analyzing trace with hash -872882933, now seen corresponding path program 1 times [2021-10-13 06:51:32,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:51:32,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538417727] [2021-10-13 06:51:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:51:32,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:51:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:51:32,160 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:51:32,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 06:51:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:51:35,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 06:51:35,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:51:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 588 proven. 416 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-10-13 06:51:45,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:52:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 935 proven. 69 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-10-13 06:52:12,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:52:12,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538417727] [2021-10-13 06:52:12,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538417727] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:52:12,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1975207891] [2021-10-13 06:52:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:52:12,603 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:52:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:52:12,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:52:12,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 06:52:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:52:19,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:52:19,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:52:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2021-10-13 06:52:21,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:52:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2021-10-13 06:52:23,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1975207891] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:52:23,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 06:52:23,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10, 10] total 22 [2021-10-13 06:52:23,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742500710] [2021-10-13 06:52:23,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:52:23,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:52:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:52:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 06:52:23,010 INFO L87 Difference]: Start difference. First operand 2852 states and 3102 transitions. Second operand has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:52:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:52:24,410 INFO L93 Difference]: Finished difference Result 5574 states and 6073 transitions. [2021-10-13 06:52:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:52:24,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 593 [2021-10-13 06:52:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:52:24,425 INFO L225 Difference]: With dead ends: 5574 [2021-10-13 06:52:24,425 INFO L226 Difference]: Without dead ends: 2852 [2021-10-13 06:52:24,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 2346 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 963.1ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 06:52:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-10-13 06:52:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2021-10-13 06:52:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 1.080673447913013) internal successors, (3081), 2851 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:52:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3081 transitions. [2021-10-13 06:52:24,497 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3081 transitions. Word has length 593 [2021-10-13 06:52:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:52:24,498 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 3081 transitions. [2021-10-13 06:52:24,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:52:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3081 transitions. [2021-10-13 06:52:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2021-10-13 06:52:24,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:52:24,507 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:52:24,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 06:52:24,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 06:52:24,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:52:24,921 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:52:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:52:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash 935857580, now seen corresponding path program 1 times [2021-10-13 06:52:24,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:52:24,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178520685] [2021-10-13 06:52:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:52:24,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:52:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:52:24,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:52:24,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 06:52:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:52:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 06:52:30,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:52:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 793 proven. 210 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-10-13 06:52:37,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:53:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-10-13 06:53:06,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:53:06,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178520685] [2021-10-13 06:53:06,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178520685] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 06:53:06,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:53:06,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2021-10-13 06:53:06,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545016173] [2021-10-13 06:53:06,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 06:53:06,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:53:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 06:53:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-13 06:53:06,461 INFO L87 Difference]: Start difference. First operand 2852 states and 3081 transitions. Second operand has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:11,460 INFO L93 Difference]: Finished difference Result 5677 states and 6136 transitions. [2021-10-13 06:53:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:53:11,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 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 690 [2021-10-13 06:53:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:11,478 INFO L225 Difference]: With dead ends: 5677 [2021-10-13 06:53:11,478 INFO L226 Difference]: Without dead ends: 2965 [2021-10-13 06:53:11,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1363 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 601.3ms TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-13 06:53:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2021-10-13 06:53:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2965. [2021-10-13 06:53:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2964 states have (on average 1.0775978407557354) internal successors, (3194), 2964 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3194 transitions. [2021-10-13 06:53:11,552 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3194 transitions. Word has length 690 [2021-10-13 06:53:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:11,553 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 3194 transitions. [2021-10-13 06:53:11,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3194 transitions. [2021-10-13 06:53:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2021-10-13 06:53:11,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:11,562 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:53:11,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 06:53:11,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:53:11,777 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:53:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:11,777 INFO L82 PathProgramCache]: Analyzing trace with hash 97903941, now seen corresponding path program 1 times [2021-10-13 06:53:11,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:53:11,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527608218] [2021-10-13 06:53:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:11,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:53:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:53:11,785 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:53:11,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 06:53:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:19,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:53:19,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:53:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 959 proven. 353 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-10-13 06:53:21,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:53:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 1312 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-10-13 06:53:23,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:53:23,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527608218] [2021-10-13 06:53:23,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527608218] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 06:53:23,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:53:23,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-13 06:53:23,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233993472] [2021-10-13 06:53:23,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:53:23,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:53:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:53:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:53:23,370 INFO L87 Difference]: Start difference. First operand 2965 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:27,195 INFO L93 Difference]: Finished difference Result 6640 states and 7219 transitions. [2021-10-13 06:53:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:53:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 717 [2021-10-13 06:53:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:27,209 INFO L225 Difference]: With dead ends: 6640 [2021-10-13 06:53:27,209 INFO L226 Difference]: Without dead ends: 3855 [2021-10-13 06:53:27,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1432 GetRequests, 1429 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:53:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2021-10-13 06:53:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3855. [2021-10-13 06:53:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3854 states have (on average 1.07420861442657) internal successors, (4140), 3854 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 4140 transitions. [2021-10-13 06:53:27,321 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 4140 transitions. Word has length 717 [2021-10-13 06:53:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:27,322 INFO L470 AbstractCegarLoop]: Abstraction has 3855 states and 4140 transitions. [2021-10-13 06:53:27,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 4140 transitions. [2021-10-13 06:53:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2021-10-13 06:53:27,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:27,332 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:53:27,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 06:53:27,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:53:27,553 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:53:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1798275234, now seen corresponding path program 1 times [2021-10-13 06:53:27,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:53:27,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813627029] [2021-10-13 06:53:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:27,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:53:27,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:53:27,558 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:53:27,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 06:53:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:35,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:53:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:53:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 1545 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2021-10-13 06:53:36,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:53:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 1545 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2021-10-13 06:53:38,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:53:38,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813627029] [2021-10-13 06:53:38,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813627029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:53:38,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:53:38,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 06:53:38,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758348542] [2021-10-13 06:53:38,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:53:38,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:53:38,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:53:38,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:53:38,346 INFO L87 Difference]: Start difference. First operand 3855 states and 4140 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:41,139 INFO L93 Difference]: Finished difference Result 8064 states and 8681 transitions. [2021-10-13 06:53:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:53:41,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 872 [2021-10-13 06:53:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:41,170 INFO L225 Difference]: With dead ends: 8064 [2021-10-13 06:53:41,171 INFO L226 Difference]: Without dead ends: 4389 [2021-10-13 06:53:41,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1742 GetRequests, 1740 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:53:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2021-10-13 06:53:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4211. [2021-10-13 06:53:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.057957244655582) internal successors, (4454), 4210 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 4454 transitions. [2021-10-13 06:53:41,244 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 4454 transitions. Word has length 872 [2021-10-13 06:53:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:41,245 INFO L470 AbstractCegarLoop]: Abstraction has 4211 states and 4454 transitions. [2021-10-13 06:53:41,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 4454 transitions. [2021-10-13 06:53:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2021-10-13 06:53:41,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:41,257 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:53:41,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 06:53:41,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:53:41,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:53:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash -636152843, now seen corresponding path program 1 times [2021-10-13 06:53:41,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:53:41,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59558095] [2021-10-13 06:53:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:41,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:53:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:53:41,489 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:53:41,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 06:53:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 06:53:49,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:53:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 495 proven. 2135 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-13 06:53:53,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:53:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 1975 proven. 82 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-13 06:53:58,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:53:58,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59558095] [2021-10-13 06:53:58,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59558095] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:53:58,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [784609907] [2021-10-13 06:53:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:58,807 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:53:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:53:58,809 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:53:58,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 06:54:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:10,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:54:10,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 2506 trivial. 0 not checked. [2021-10-13 06:54:13,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 2506 trivial. 0 not checked. [2021-10-13 06:54:16,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [784609907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:16,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 06:54:16,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 5] total 18 [2021-10-13 06:54:16,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244435905] [2021-10-13 06:54:16,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:54:16,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:54:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-13 06:54:16,308 INFO L87 Difference]: Start difference. First operand 4211 states and 4454 transitions. Second operand has 10 states, 10 states have (on average 28.3) internal successors, (283), 10 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:19,745 INFO L93 Difference]: Finished difference Result 8514 states and 9011 transitions. [2021-10-13 06:54:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:54:19,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 28.3) internal successors, (283), 10 states have internal predecessors, (283), 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 967 [2021-10-13 06:54:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:19,760 INFO L225 Difference]: With dead ends: 8514 [2021-10-13 06:54:19,761 INFO L226 Difference]: Without dead ends: 4033 [2021-10-13 06:54:19,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3866 GetRequests, 3849 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 746.7ms TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-13 06:54:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-10-13 06:54:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 4033. [2021-10-13 06:54:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 1.054811507936508) internal successors, (4253), 4032 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 4253 transitions. [2021-10-13 06:54:19,832 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 4253 transitions. Word has length 967 [2021-10-13 06:54:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:19,834 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 4253 transitions. [2021-10-13 06:54:19,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.3) internal successors, (283), 10 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 4253 transitions. [2021-10-13 06:54:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2021-10-13 06:54:19,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:19,851 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:19,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:20,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-13 06:54:20,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:20,265 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash 722665482, now seen corresponding path program 1 times [2021-10-13 06:54:20,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:20,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002830543] [2021-10-13 06:54:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:20,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:20,273 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:20,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 06:54:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:29,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 06:54:29,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 1272 proven. 2098 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-10-13 06:54:33,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 2722 proven. 75 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-10-13 06:54:38,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:38,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002830543] [2021-10-13 06:54:38,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002830543] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:54:38,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1762980931] [2021-10-13 06:54:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:38,682 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:54:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:54:38,684 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:54:38,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 06:54:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:52,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:54:52,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 3246 trivial. 0 not checked. [2021-10-13 06:54:55,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 3246 trivial. 0 not checked. [2021-10-13 06:54:58,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1762980931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:58,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 06:54:58,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 5] total 18 [2021-10-13 06:54:58,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955228565] [2021-10-13 06:54:58,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:54:58,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:54:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-13 06:54:58,147 INFO L87 Difference]: Start difference. First operand 4033 states and 4253 transitions. Second operand has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:01,541 INFO L93 Difference]: Finished difference Result 8651 states and 9116 transitions. [2021-10-13 06:55:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:55:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 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 1075 [2021-10-13 06:55:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:01,543 INFO L225 Difference]: With dead ends: 8651 [2021-10-13 06:55:01,543 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:55:01,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4298 GetRequests, 4281 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 749.2ms TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-13 06:55:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:55:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:55:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:55:01,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1075 [2021-10-13 06:55:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:01,549 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:55:01,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:55:01,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:55:01,552 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:01,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 06:55:01,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-10-13 06:55:01,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 06:55:01,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:55:01,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:02,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:02,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:03,783 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-13 06:55:03,783 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-13 06:55:03,783 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-13 06:55:03,783 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-13 06:55:03,783 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-13 06:55:03,783 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-13 06:55:03,784 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-13 06:55:03,785 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,786 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,786 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-13 06:55:03,787 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-13 06:55:03,788 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-13 06:55:03,789 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-13 06:55:03,790 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-13 06:55:03,790 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-13 06:55:03,790 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-13 06:55:03,790 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-13 06:55:03,790 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-13 06:55:03,790 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-13 06:55:03,791 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-13 06:55:03,792 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-13 06:55:03,792 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-13 06:55:03,792 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-13 06:55:03,792 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,792 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,792 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-13 06:55:03,794 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:55:03,795 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-13 06:55:03,796 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-13 06:55:03,797 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:55:03,798 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-13 06:55:03,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 206) no Hoare annotation was computed. [2021-10-13 06:55:03,799 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-13 06:55:03,799 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-13 06:55:03,799 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-13 06:55:03,799 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-13 06:55:03,799 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,800 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,800 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,800 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-13 06:55:03,800 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-13 06:55:03,800 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-13 06:55:03,801 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-13 06:55:03,801 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-13 06:55:03,801 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-13 06:55:03,801 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-13 06:55:03,801 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-13 06:55:03,802 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,802 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,802 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,802 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-13 06:55:03,802 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-13 06:55:03,803 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-13 06:55:03,803 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-13 06:55:03,803 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-13 06:55:03,803 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-13 06:55:03,803 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-13 06:55:03,804 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-13 06:55:03,804 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,804 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,804 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,804 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-13 06:55:03,805 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-13 06:55:03,805 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-13 06:55:03,805 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-13 06:55:03,805 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-13 06:55:03,805 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-13 06:55:03,806 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-13 06:55:03,806 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-13 06:55:03,806 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,806 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,806 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,806 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-13 06:55:03,807 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-13 06:55:03,807 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-13 06:55:03,807 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-13 06:55:03,807 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-13 06:55:03,807 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-13 06:55:03,808 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-13 06:55:03,808 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-13 06:55:03,808 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,808 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,808 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,809 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-13 06:55:03,809 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-13 06:55:03,809 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-13 06:55:03,809 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-13 06:55:03,809 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-13 06:55:03,809 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-13 06:55:03,810 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-13 06:55:03,810 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-13 06:55:03,810 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,810 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,810 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-13 06:55:03,811 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-13 06:55:03,811 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-13 06:55:03,811 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-13 06:55:03,811 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-13 06:55:03,811 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-13 06:55:03,811 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-13 06:55:03,812 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-13 06:55:03,812 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,812 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,812 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-13 06:55:03,812 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:55:03,813 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-13 06:55:03,813 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-13 06:55:03,813 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-13 06:55:03,813 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-13 06:55:03,813 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-13 06:55:03,814 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,814 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,814 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse13 (= (_ bv7 32) ~a21~0)) (.cse6 (bvsle ~a12~0 (_ bv4294967253 32)))) (let ((.cse5 (= (_ bv8 32) ~a15~0)) (.cse0 (= (_ bv6 32) ~a21~0)) (.cse11 (not (bvslt (_ bv4294967253 32) ~a12~0))) (.cse12 (not (bvsge (_ bv11 32) ~a12~0))) (.cse8 (not .cse6)) (.cse7 (= (_ bv1 32) ~a24~0)) (.cse10 (not .cse13))) (let ((.cse2 (not (= ~a21~0 (_ bv9 32)))) (.cse4 (or (not .cse7) .cse10)) (.cse1 (or (not (= (_ bv10 32) ~a21~0)) .cse8)) (.cse3 (or (not .cse0) .cse11 .cse12)) (.cse9 (or (not (bvslt (_ bv80 32) ~a12~0)) (not .cse5)))) (or (and (= (_ bv5 32) ~a15~0) .cse0) (= (_ bv8 32) ~a21~0) (and .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse2 .cse6 .cse7 .cse4) (and .cse1 (or (not (= ~a15~0 (_ bv9 32))) .cse8) .cse9 (or .cse10 .cse11 .cse12) .cse3) (= (_ bv7 32) ~a15~0) (and .cse9 .cse13 .cse5))))) [2021-10-13 06:55:03,814 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-13 06:55:03,815 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-13 06:55:03,815 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-13 06:55:03,815 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-13 06:55:03,815 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-13 06:55:03,815 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-13 06:55:03,816 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-13 06:55:03,816 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-13 06:55:03,816 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,816 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,816 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-13 06:55:03,817 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-13 06:55:03,817 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-13 06:55:03,817 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-13 06:55:03,817 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-13 06:55:03,817 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-13 06:55:03,818 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-13 06:55:03,818 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-13 06:55:03,818 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,818 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,818 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:55:03,819 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-13 06:55:03,819 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-13 06:55:03,819 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-13 06:55:03,819 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-13 06:55:03,819 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-13 06:55:03,819 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-13 06:55:03,820 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,820 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,820 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-13 06:55:03,820 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,820 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-13 06:55:03,821 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse13 (= (_ bv7 32) ~a21~0)) (.cse6 (bvsle ~a12~0 (_ bv4294967253 32)))) (let ((.cse5 (= (_ bv8 32) ~a15~0)) (.cse0 (= (_ bv6 32) ~a21~0)) (.cse11 (not (bvslt (_ bv4294967253 32) ~a12~0))) (.cse12 (not (bvsge (_ bv11 32) ~a12~0))) (.cse8 (not .cse6)) (.cse7 (= (_ bv1 32) ~a24~0)) (.cse10 (not .cse13))) (let ((.cse2 (not (= ~a21~0 (_ bv9 32)))) (.cse4 (or (not .cse7) .cse10)) (.cse1 (or (not (= (_ bv10 32) ~a21~0)) .cse8)) (.cse3 (or (not .cse0) .cse11 .cse12)) (.cse9 (or (not (bvslt (_ bv80 32) ~a12~0)) (not .cse5)))) (or (and (= (_ bv5 32) ~a15~0) .cse0) (= (_ bv8 32) ~a21~0) (and .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse2 .cse6 .cse7 .cse4) (and .cse1 (or (not (= ~a15~0 (_ bv9 32))) .cse8) .cse9 (or .cse10 .cse11 .cse12) .cse3) (= (_ bv7 32) ~a15~0) (and .cse9 .cse13 .cse5))))) [2021-10-13 06:55:03,821 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-13 06:55:03,821 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-13 06:55:03,821 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-13 06:55:03,822 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-13 06:55:03,822 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-13 06:55:03,822 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-13 06:55:03,822 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-13 06:55:03,822 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-13 06:55:03,823 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-13 06:55:03,823 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,823 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,823 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 06:55:03,823 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-13 06:55:03,823 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-13 06:55:03,824 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 06:55:03,824 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-13 06:55:03,829 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:55:03,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:55:03 BoogieIcfgContainer [2021-10-13 06:55:03,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:55:03,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:55:03,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:55:03,858 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:55:03,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:39" (3/4) ... [2021-10-13 06:55:03,862 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:55:03,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 06:55:03,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:55:03,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:55:03,897 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:55:04,068 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:55:04,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:55:04,070 INFO L168 Benchmark]: Toolchain (without parser) took 329422.63 ms. Allocated memory was 50.3 MB in the beginning and 1.0 GB in the end (delta: 985.7 MB). Free memory was 32.4 MB in the beginning and 218.4 MB in the end (delta: -186.0 MB). Peak memory consumption was 800.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,071 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:04,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 879.38 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.2 MB in the beginning and 30.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,072 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.78 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 37.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,073 INFO L168 Benchmark]: Boogie Preprocessor took 120.46 ms. Allocated memory is still 60.8 MB. Free memory was 37.2 MB in the beginning and 32.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,073 INFO L168 Benchmark]: RCFGBuilder took 4009.25 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 32.0 MB in the beginning and 44.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,074 INFO L168 Benchmark]: TraceAbstraction took 324047.55 ms. Allocated memory was 77.6 MB in the beginning and 1.0 GB in the end (delta: 958.4 MB). Free memory was 44.2 MB in the beginning and 237.3 MB in the end (delta: -193.1 MB). Peak memory consumption was 765.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,074 INFO L168 Benchmark]: Witness Printer took 211.47 ms. Allocated memory is still 1.0 GB. Free memory was 237.3 MB in the beginning and 218.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:04,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 879.38 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.2 MB in the beginning and 30.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 144.78 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 37.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 120.46 ms. Allocated memory is still 60.8 MB. Free memory was 37.2 MB in the beginning and 32.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4009.25 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 32.0 MB in the beginning and 44.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 324047.55 ms. Allocated memory was 77.6 MB in the beginning and 1.0 GB in the end (delta: 958.4 MB). Free memory was 44.2 MB in the beginning and 237.3 MB in the end (delta: -193.1 MB). Peak memory consumption was 765.0 MB. Max. memory is 16.1 GB. * Witness Printer took 211.47 ms. Allocated memory is still 1.0 GB. Free memory was 237.3 MB in the beginning and 218.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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: 206]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 323936.2ms, OverallIterations: 13, TraceHistogramMax: 10, EmptinessCheckTime: 154.9ms, AutomataDifference: 60580.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1828.3ms, InitialAbstractionConstructionTime: 21.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1601 SDtfs, 3918 SDslu, 171 SDs, 0 SdLazy, 11680 SolverSat, 1381 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51859.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19540 GetRequests, 19426 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 4490.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4211occurred in iteration=11, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 868.3ms AutomataMinimizationTime, 13 MinimizatonAttempts, 2058 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 76 NumberOfFragments, 287 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4524 FormulaSimplificationTreeSizeReduction, 467.9ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 3924 FormulaSimplificationTreeSizeReductionInter, 1352.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 553.5ms SsaConstructionTime, 4483.1ms SatisfiabilityAnalysisTime, 174763.7ms InterpolantComputationTime, 9784 NumberOfCodeBlocks, 9784 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 19534 ConstructedInterpolants, 0 QuantifiedInterpolants, 122531 SizeOfPredicates, 58 NumberOfNonLiveVariables, 11091 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 34 InterpolantComputations, 24 PerfectInterpolantSequences, 41719/47642 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((5bv32 == a15 && 6bv32 == a21) || 8bv32 == a21) || (((((!(10bv32 == a21) || !~bvsle32(a12, 4294967253bv32)) && !(a21 == 9bv32)) && ((!(6bv32 == a21) || !~bvslt32(4294967253bv32, a12)) || !~bvsge32(11bv32, a12))) && (!(1bv32 == a24) || !(7bv32 == a21))) && 8bv32 == a15)) || (((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) && (!(1bv32 == a24) || !(7bv32 == a21)))) || (((((!(10bv32 == a21) || !~bvsle32(a12, 4294967253bv32)) && (!(a15 == 9bv32) || !~bvsle32(a12, 4294967253bv32))) && (!~bvslt32(80bv32, a12) || !(8bv32 == a15))) && ((!(7bv32 == a21) || !~bvslt32(4294967253bv32, a12)) || !~bvsge32(11bv32, a12))) && ((!(6bv32 == a21) || !~bvslt32(4294967253bv32, a12)) || !~bvsge32(11bv32, a12)))) || 7bv32 == a15) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && 7bv32 == a21) && 8bv32 == a15) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((5bv32 == a15 && 6bv32 == a21) || 8bv32 == a21) || (((((!(10bv32 == a21) || !~bvsle32(a12, 4294967253bv32)) && !(a21 == 9bv32)) && ((!(6bv32 == a21) || !~bvslt32(4294967253bv32, a12)) || !~bvsge32(11bv32, a12))) && (!(1bv32 == a24) || !(7bv32 == a21))) && 8bv32 == a15)) || (((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) && (!(1bv32 == a24) || !(7bv32 == a21)))) || (((((!(10bv32 == a21) || !~bvsle32(a12, 4294967253bv32)) && (!(a15 == 9bv32) || !~bvsle32(a12, 4294967253bv32))) && (!~bvslt32(80bv32, a12) || !(8bv32 == a15))) && ((!(7bv32 == a21) || !~bvslt32(4294967253bv32, a12)) || !~bvsge32(11bv32, a12))) && ((!(6bv32 == a21) || !~bvslt32(4294967253bv32, a12)) || !~bvsge32(11bv32, a12)))) || 7bv32 == a15) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && 7bv32 == a21) && 8bv32 == a15) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:55:04,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08849c33-729f-4b4f-9da5-18f3904ded14/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...