./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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 deb3b4ef82e20a16aeb915d8776e82c58e439608 ............................................................................................................................................................................................................................................................................................................................................................................ 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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 deb3b4ef82e20a16aeb915d8776e82c58e439608 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:44:03,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:03,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:03,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:03,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:03,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:03,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:03,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:03,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:03,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:03,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:03,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:03,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:03,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:03,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:03,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:03,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:03,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:03,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:03,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:03,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:03,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:03,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:03,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:03,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:03,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:03,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:03,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:03,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:03,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:03,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:03,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:03,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:03,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:03,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:03,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:03,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:03,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:03,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:03,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:03,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:44:03,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:03,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:03,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:03,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:03,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:03,958 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:03,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:44:03,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:03,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:03,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:44:03,960 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:44:03,960 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:03,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:44:03,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:44:03,961 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:44:03,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:03,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:03,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:44:03,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:03,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:03,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:03,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:03,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:03,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:03,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:03,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:03,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:03,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:03,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:03,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:03,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:03,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:03,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:03,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:03,967 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:44:03,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:44:03,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:03,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:03,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:03,968 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deb3b4ef82e20a16aeb915d8776e82c58e439608 [2021-10-13 06:44:04,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:04,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:04,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:04,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:04,250 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:04,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-10-13 06:44:04,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/fd5b4d0cb/8ec0200002e2477b9bd7c98f5ab72062/FLAG53d938b27 [2021-10-13 06:44:04,708 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:04,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-10-13 06:44:04,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/fd5b4d0cb/8ec0200002e2477b9bd7c98f5ab72062/FLAG53d938b27 [2021-10-13 06:44:05,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/fd5b4d0cb/8ec0200002e2477b9bd7c98f5ab72062 [2021-10-13 06:44:05,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:05,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:05,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:05,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:05,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:05,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1830b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05, skipping insertion in model container [2021-10-13 06:44:05,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:05,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:05,341 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2021-10-13 06:44:05,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:05,368 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:05,380 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2021-10-13 06:44:05,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:05,411 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:05,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05 WrapperNode [2021-10-13 06:44:05,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:05,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:05,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:05,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:05,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:05,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:05,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:05,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:05,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:05,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:05,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:05,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:05,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (1/1) ... [2021-10-13 06:44:05,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:05,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:05,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:44:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:06,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:06,011 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 06:44:06,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:06 BoogieIcfgContainer [2021-10-13 06:44:06,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:06,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:06,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:06,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:06,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:05" (1/3) ... [2021-10-13 06:44:06,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332bb03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:06, skipping insertion in model container [2021-10-13 06:44:06,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:05" (2/3) ... [2021-10-13 06:44:06,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332bb03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:06, skipping insertion in model container [2021-10-13 06:44:06,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:06" (3/3) ... [2021-10-13 06:44:06,025 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.c [2021-10-13 06:44:06,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:06,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 06:44:06,102 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:06,108 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 06:44:06,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 06:44:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 06:44:06,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:06,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 06:44:06,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash 3301933, now seen corresponding path program 1 times [2021-10-13 06:44:06,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:06,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129567860] [2021-10-13 06:44:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:06,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:06,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:44:06,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464510902] [2021-10-13 06:44:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:06,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:06,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:06,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:06,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:44:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:06,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:44:06,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:06,458 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 06:44:06,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:08,036 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 06:44:08,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:08,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129567860] [2021-10-13 06:44:08,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:44:08,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464510902] [2021-10-13 06:44:08,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464510902] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:08,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:08,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 06:44:08,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424970535] [2021-10-13 06:44:08,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:08,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:08,059 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:08,365 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-13 06:44:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:44:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 06:44:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:08,374 INFO L225 Difference]: With dead ends: 36 [2021-10-13 06:44:08,374 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 06:44:08,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1564.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 06:44:08,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 06:44:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 06:44:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 06:44:08,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-13 06:44:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:08,409 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 06:44:08,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 06:44:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 06:44:08,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:08,410 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:08,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:08,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 06:44:08,625 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1160044347, now seen corresponding path program 1 times [2021-10-13 06:44:08,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:08,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582461437] [2021-10-13 06:44:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:08,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:08,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:44:08,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306178696] [2021-10-13 06:44:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:08,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:08,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:08,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 06:44:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 06:44:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:09,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:09,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:09,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582461437] [2021-10-13 06:44:09,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:44:09,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306178696] [2021-10-13 06:44:09,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306178696] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:09,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [920525236] [2021-10-13 06:44:09,509 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-13 06:44:09,509 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 06:44:09,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 06:44:09,519 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 06:44:09,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 06:44:09,566 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-10-13 06:44:09,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:09,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 06:44:09,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:09,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 06:44:09,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-13 06:44:09,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 06:44:09,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:09,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:09,628 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:09,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:09,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:09,657 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 06:44:09,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:44:09,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:44:09,661 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:09,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:09,754 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:09,760 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-13 06:44:09,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-13 06:44:09,766 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 06:44:09,768 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:290, output treesize:144 [2021-10-13 06:44:09,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:09,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:09,994 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_14| 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 06:44:09,997 INFO L168 Benchmark]: Toolchain (without parser) took 4879.14 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 57.8 MB in the beginning and 38.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:09,997 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:09,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.89 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 57.5 MB in the beginning and 72.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:09,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.82 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 70.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:09,999 INFO L168 Benchmark]: Boogie Preprocessor took 42.34 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.5 MB in the end (delta: 899.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:10,000 INFO L168 Benchmark]: RCFGBuilder took 508.85 ms. Allocated memory is still 96.5 MB. Free memory was 69.5 MB in the beginning and 56.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:10,000 INFO L168 Benchmark]: TraceAbstraction took 3980.31 ms. Allocated memory is still 96.5 MB. Free memory was 56.4 MB in the beginning and 38.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:10,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.89 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 57.5 MB in the beginning and 72.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.82 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 70.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.34 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.5 MB in the end (delta: 899.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 508.85 ms. Allocated memory is still 96.5 MB. Free memory was 69.5 MB in the beginning and 56.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3980.31 ms. Allocated memory is still 96.5 MB. Free memory was 56.4 MB in the beginning and 38.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 19.7 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_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: 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 06:44:10,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:44:12,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:12,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:12,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:12,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:12,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:12,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:12,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:12,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:12,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:12,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:12,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:12,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:12,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:12,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:12,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:12,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:12,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:12,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:12,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:12,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:12,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:12,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:12,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:12,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:12,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:12,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:12,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:12,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:12,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:12,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:12,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:12,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:12,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:12,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:12,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:12,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:12,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:12,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:12,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:12,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:12,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:44:12,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:12,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:12,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:12,489 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:12,490 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:12,490 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:12,490 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:12,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:12,491 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:12,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:12,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:12,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:12,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:12,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:12,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:12,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:12,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:12,495 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:44:12,495 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:44:12,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:12,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:12,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:12,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:12,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:12,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:44:12,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:12,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:12,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:12,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:12,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:12,498 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:44:12,498 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:12,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:12,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:12,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:12,499 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deb3b4ef82e20a16aeb915d8776e82c58e439608 [2021-10-13 06:44:12,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:12,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:12,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:12,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:12,891 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:12,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-10-13 06:44:12,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/9c906defd/342cb2a9cf3c4b85a3b65b8283f1bf08/FLAG150e60ed6 [2021-10-13 06:44:13,465 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:13,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-10-13 06:44:13,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/9c906defd/342cb2a9cf3c4b85a3b65b8283f1bf08/FLAG150e60ed6 [2021-10-13 06:44:13,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/data/9c906defd/342cb2a9cf3c4b85a3b65b8283f1bf08 [2021-10-13 06:44:13,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:13,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:13,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:13,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:13,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:13,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:13" (1/1) ... [2021-10-13 06:44:13,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e8e534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:13, skipping insertion in model container [2021-10-13 06:44:13,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:13" (1/1) ... [2021-10-13 06:44:13,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:13,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:14,023 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2021-10-13 06:44:14,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:14,054 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:14,067 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_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2021-10-13 06:44:14,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:14,091 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:14,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14 WrapperNode [2021-10-13 06:44:14,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:14,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:14,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:14,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:14,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:14,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:14,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:14,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:14,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:14,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:14,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:14,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:14,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (1/1) ... [2021-10-13 06:44:14,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:14,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:14,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:14,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:44:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:15,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:15,723 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 06:44:15,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:15 BoogieIcfgContainer [2021-10-13 06:44:15,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:15,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:15,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:15,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:15,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:13" (1/3) ... [2021-10-13 06:44:15,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f625437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:15, skipping insertion in model container [2021-10-13 06:44:15,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:14" (2/3) ... [2021-10-13 06:44:15,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f625437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:15, skipping insertion in model container [2021-10-13 06:44:15,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:15" (3/3) ... [2021-10-13 06:44:15,733 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.c [2021-10-13 06:44:15,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:15,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 06:44:15,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:15,793 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 06:44:15,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 06:44:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:44:15,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:15,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:15,813 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:15,819 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-13 06:44:15,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:15,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645584080] [2021-10-13 06:44:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:15,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:15,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:15,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:44:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:16,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:44:16,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:16,181 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 06:44:16,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:16,255 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 06:44:16,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:16,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645584080] [2021-10-13 06:44:16,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645584080] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:16,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:16,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:44:16,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111367281] [2021-10-13 06:44:16,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:44:16,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:44:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:44:16,288 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:16,306 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-13 06:44:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:44:16,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 06:44:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:16,317 INFO L225 Difference]: With dead ends: 43 [2021-10-13 06:44:16,317 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 06:44:16,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:44:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 06:44:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 06:44:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 06:44:16,349 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-13 06:44:16,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:16,349 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 06:44:16,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 06:44:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:44:16,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:16,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:16,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 06:44:16,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:16,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-13 06:44:16,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:16,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251570082] [2021-10-13 06:44:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:16,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:16,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:16,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:44:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:16,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:16,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:17,022 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 06:44:17,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:21,809 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 06:44:21,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:21,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251570082] [2021-10-13 06:44:21,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251570082] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:21,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:21,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 06:44:21,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005642168] [2021-10-13 06:44:21,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:21,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:21,814 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 06:44:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:38,677 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-13 06:44:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:44:38,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 06:44:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:38,727 INFO L225 Difference]: With dead ends: 42 [2021-10-13 06:44:38,727 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 06:44:38,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9794.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:44:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 06:44:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-10-13 06:44:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 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 06:44:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 06:44:38,737 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2021-10-13 06:44:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:38,738 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 06:44:38,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 06:44:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 06:44:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:44:38,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:38,740 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:38,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:38,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:38,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 1 times [2021-10-13 06:44:38,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:38,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318395685] [2021-10-13 06:44:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:38,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:38,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:38,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:38,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:44:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:39,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:44:39,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:45,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:45:11,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:45:11,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318395685] [2021-10-13 06:45:11,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318395685] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:11,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767449123] [2021-10-13 06:45:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:11,382 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:45:11,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:45:11,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:45:11,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 06:45:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:12,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:45:12,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:15,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:45:35,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1767449123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:35,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496806078] [2021-10-13 06:45:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:35,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:35,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:35,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:45:35,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 06:45:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:35,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 06:45:35,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:39,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:45:58,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496806078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:58,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:45:58,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 7, 4] total 9 [2021-10-13 06:45:58,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260528548] [2021-10-13 06:45:58,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 06:45:58,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:45:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 06:45:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:45:58,702 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 06:46:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:46:24,053 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-13 06:46:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 06:46:24,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 15 [2021-10-13 06:46:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:46:24,054 INFO L225 Difference]: With dead ends: 40 [2021-10-13 06:46:24,054 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 06:46:24,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 60927.9ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-13 06:46:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 06:46:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2021-10-13 06:46:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:46:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 06:46:24,062 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-10-13 06:46:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:46:24,063 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 06:46:24,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 06:46:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 06:46:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:46:24,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:46:24,064 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:46:24,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:46:24,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 06:46:24,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:46:24,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:46:24,665 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:46:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:46:24,666 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-10-13 06:46:24,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:46:24,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991769071] [2021-10-13 06:46:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:46:24,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:46:24,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:46:24,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:46:24,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 06:46:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:46:25,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 06:46:25,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:46:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:26,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:46:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:37,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:46:37,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991769071] [2021-10-13 06:46:37,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991769071] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:46:37,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1100788886] [2021-10-13 06:46:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:46:37,085 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:46:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:46:37,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:46:37,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 06:46:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:46:38,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:46:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:46:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:38,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:46:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:44,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1100788886] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:46:44,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022249669] [2021-10-13 06:46:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:46:44,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:46:44,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:46:44,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:46:44,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 06:46:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:46:45,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 06:46:45,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:46:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:46,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:46:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:51,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022249669] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:46:51,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:46:51,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 9, 6] total 16 [2021-10-13 06:46:51,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017292971] [2021-10-13 06:46:51,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 06:46:51,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:46:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 06:46:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 06:46:51,116 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 06:47:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:47:36,558 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-10-13 06:47:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 06:47:36,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 06:47:36,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:47:36,575 INFO L225 Difference]: With dead ends: 41 [2021-10-13 06:47:36,576 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 06:47:36,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 41256.3ms TimeCoverageRelationStatistics Valid=362, Invalid=898, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 06:47:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 06:47:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 06:47:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:47:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-13 06:47:36,588 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2021-10-13 06:47:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:47:36,589 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-13 06:47:36,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 06:47:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-13 06:47:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 06:47:36,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:47:36,591 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:47:36,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-13 06:47:36,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 06:47:37,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 06:47:37,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:47:37,198 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:47:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:47:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash 728478426, now seen corresponding path program 2 times [2021-10-13 06:47:37,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:47:37,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546871118] [2021-10-13 06:47:37,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:47:37,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:47:37,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:47:37,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:47:37,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 06:47:38,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:47:38,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:47:39,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 06:47:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:47:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:47:41,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:09,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:48:09,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546871118] [2021-10-13 06:48:09,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546871118] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:48:09,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [827922861] [2021-10-13 06:48:09,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:48:09,451 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:48:09,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:48:09,466 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:48:09,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 06:48:12,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:48:12,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:48:12,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 06:48:12,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:13,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:32,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [827922861] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:48:32,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679807100] [2021-10-13 06:48:32,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:48:32,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:48:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:48:32,138 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:48:32,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 06:48:33,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:48:33,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:48:33,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 06:48:33,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:36,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:46,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679807100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:48:46,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:48:46,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 9, 12, 9] total 28 [2021-10-13 06:48:46,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656660992] [2021-10-13 06:48:46,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 06:48:46,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:48:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 06:48:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-10-13 06:48:46,714 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:49:08,125 WARN L207 SmtUtils]: Spent 8.98 s on a formula simplification that was a NOOP. DAG size: 74 [2021-10-13 06:49:17,082 WARN L207 SmtUtils]: Spent 5.46 s on a formula simplification that was a NOOP. DAG size: 71 [2021-10-13 06:49:56,482 WARN L207 SmtUtils]: Spent 6.62 s on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-10-13 06:50:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:50:44,794 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-13 06:50:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 06:50:44,815 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 06:50:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:50:44,817 INFO L225 Difference]: With dead ends: 59 [2021-10-13 06:50:44,817 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 06:50:44,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 118317.7ms TimeCoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 06:50:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 06:50:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-13 06:50:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 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 06:50:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-10-13 06:50:44,837 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 26 [2021-10-13 06:50:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:50:44,837 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-10-13 06:50:44,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-10-13 06:50:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 06:50:44,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:44,839 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:44,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:45,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:45,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 06:50:45,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:50:45,450 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash 899917594, now seen corresponding path program 3 times [2021-10-13 06:50:45,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:50:45,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291919716] [2021-10-13 06:50:45,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:50:45,451 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:50:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:50:45,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:50:45,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 06:50:51,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 06:50:51,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:50:52,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 06:50:52,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:50:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:50:55,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:51:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:58,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:51:58,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291919716] [2021-10-13 06:51:58,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291919716] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:51:58,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567097033] [2021-10-13 06:51:58,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:51:58,646 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:51:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:51:58,648 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:51:58,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 06:52:05,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 06:52:05,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:52:05,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 06:52:05,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:52:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:52:08,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:10,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567097033] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:54:10,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535345953] [2021-10-13 06:54:10,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:54:10,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:54:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:54:10,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:54:10,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 06:54:15,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 06:54:15,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:54:16,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 06:54:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:23,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535345953] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:54:58,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:54:58,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15, 15, 18, 15] total 64 [2021-10-13 06:54:58,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875928474] [2021-10-13 06:54:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-13 06:54:58,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-13 06:54:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3325, Unknown=4, NotChecked=0, Total=4032 [2021-10-13 06:54:58,257 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 06:55:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:30,442 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-10-13 06:55:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 06:55:30,443 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 44 [2021-10-13 06:55:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:30,443 INFO L225 Difference]: With dead ends: 52 [2021-10-13 06:55:30,444 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:55:30,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 172117.3ms TimeCoverageRelationStatistics Valid=1378, Invalid=6100, Unknown=4, NotChecked=0, Total=7482 [2021-10-13 06:55:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:55:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:55:30,448 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 06:55:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:55:30,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-10-13 06:55:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:30,448 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:55:30,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 06:55:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:55:30,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:55:30,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:30,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:30,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:30,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-13 06:55:30,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 06:55:31,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-13 06:55:31,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:55:31,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:55:31,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:31,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:31,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:31,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:55:31,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:56:07,462 WARN L207 SmtUtils]: Spent 36.14 s on a formula simplification. DAG size of input: 191 DAG size of output: 115 [2021-10-13 06:56:37,470 WARN L207 SmtUtils]: Spent 30.00 s on a formula simplification. DAG size of input: 188 DAG size of output: 115 [2021-10-13 06:57:24,477 WARN L207 SmtUtils]: Spent 47.00 s on a formula simplification. DAG size of input: 159 DAG size of output: 62 [2021-10-13 06:57:24,480 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 06:57:24,480 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-13 06:57:24,480 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-13 06:57:24,480 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-13 06:57:24,480 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 06:57:24,481 INFO L857 garLoopResultBuilder]: For program point L7-2(line 7) no Hoare annotation was computed. [2021-10-13 06:57:24,481 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:57:24,481 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:57:24,481 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:57:24,481 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse3 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse12 ((_ sign_extend 32) .cse3)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse20 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (bvsle .cse3 (_ bv10 32))) (.cse5 (= .cse1 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) .cse20 (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))))) (.cse6 (or .cse2 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse7 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse8 (or (= .cse20 (bvmul .cse12 ULTIMATE.start_main_~y~0)) (bvslt ULTIMATE.start_main_~c~0 .cse12))) (.cse9 ((_ sign_extend 32) (_ bv1 32)))) (or (and .cse0 (= .cse1 ULTIMATE.start_main_~y~0) (= .cse1 ULTIMATE.start_main_~c~0) (= .cse1 ULTIMATE.start_main_~x~0) .cse2 (bvsge .cse3 (_ bv0 32))) (let ((.cse4 (bvadd .cse1 (bvmul (_ bv5 64) .cse9)))) (and .cse0 (= ULTIMATE.start_main_~c~0 .cse4) .cse2 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~y~0 .cse4) .cse8)) (let ((.cse10 (bvadd .cse1 (bvmul (_ bv2 64) .cse9)))) (and .cse0 .cse2 (= .cse10 ULTIMATE.start_main_~c~0) .cse5 .cse6 .cse7 .cse8 (= .cse10 ULTIMATE.start_main_~y~0))) (let ((.cse11 (bvadd .cse1 .cse9))) (and (= ULTIMATE.start_main_~y~0 .cse11) .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse11) .cse5 .cse6 .cse7 (bvslt .cse1 .cse12))) (let ((.cse13 (bvadd .cse1 (bvmul (_ bv3 64) .cse9)))) (and .cse0 .cse2 (= ULTIMATE.start_main_~y~0 .cse13) .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~c~0 .cse13) .cse8)) (let ((.cse14 (bvadd .cse1 (bvmul (_ bv8 64) .cse9)))) (and .cse0 (= .cse14 ULTIMATE.start_main_~y~0) .cse2 (= .cse14 ULTIMATE.start_main_~c~0) .cse5 .cse6 .cse7 .cse8)) (let ((.cse15 (bvadd (bvmul (_ bv10 64) .cse9) .cse1))) (and .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse15) .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~y~0 .cse15) (bvslt (bvadd .cse1 (bvmul .cse9 (_ bv9 64))) .cse12))) (let ((.cse16 (bvadd .cse1 (bvmul (_ bv6 64) .cse9)))) (and .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse16) .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~y~0 .cse16) .cse8)) (let ((.cse17 (bvadd (bvmul (_ bv4 64) .cse9) .cse1))) (and .cse0 .cse2 (= ULTIMATE.start_main_~y~0 .cse17) .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~c~0 .cse17))) (let ((.cse18 (bvadd .cse1 (bvmul (_ bv9 64) .cse9)))) (and .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse18) .cse5 (= ULTIMATE.start_main_~y~0 .cse18) .cse6 .cse7 .cse8)) (let ((.cse19 (bvadd .cse1 (bvmul (_ bv7 64) .cse9)))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse19) .cse2 .cse5 (= ULTIMATE.start_main_~c~0 .cse19) .cse6 .cse7 .cse8)))))) [2021-10-13 06:57:24,481 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-10-13 06:57:24,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 06:57:24,482 INFO L860 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-10-13 06:57:24,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:57:24,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 06:57:24,482 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-13 06:57:24,482 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse12 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse11 ((_ sign_extend 32) .cse12)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse7 ((_ sign_extend 32) (_ bv0 32))) (.cse20 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (bvsle .cse12 (_ bv10 32))) (.cse3 (= .cse7 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) .cse20 (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))))) (.cse4 (or .cse2 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse5 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse6 (or (= .cse20 (bvmul .cse11 ULTIMATE.start_main_~y~0)) (bvslt ULTIMATE.start_main_~c~0 .cse11))) (.cse8 ((_ sign_extend 32) (_ bv1 32)))) (or (let ((.cse1 (bvadd .cse7 (bvmul (_ bv5 64) .cse8)))) (and .cse0 (= ULTIMATE.start_main_~c~0 .cse1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~y~0 .cse1) .cse6)) (let ((.cse9 (bvadd .cse7 (bvmul (_ bv2 64) .cse8)))) (and .cse0 .cse2 (= .cse9 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 .cse6 (= .cse9 ULTIMATE.start_main_~y~0))) (let ((.cse10 (bvadd .cse7 .cse8))) (and (= ULTIMATE.start_main_~y~0 .cse10) .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse10) .cse3 .cse4 .cse5 (bvslt .cse7 .cse11))) (and .cse0 (= .cse7 ULTIMATE.start_main_~y~0) (= .cse7 ULTIMATE.start_main_~c~0) (= .cse7 ULTIMATE.start_main_~x~0) .cse2 (bvsge .cse12 (_ bv0 32)) .cse5) (let ((.cse13 (bvadd .cse7 (bvmul (_ bv3 64) .cse8)))) (and .cse0 .cse2 (= ULTIMATE.start_main_~y~0 .cse13) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 .cse13) .cse6)) (let ((.cse14 (bvadd .cse7 (bvmul (_ bv8 64) .cse8)))) (and .cse0 (= .cse14 ULTIMATE.start_main_~y~0) .cse2 (= .cse14 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 .cse6)) (let ((.cse15 (bvadd (bvmul (_ bv10 64) .cse8) .cse7))) (and .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse15) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~y~0 .cse15) (bvslt (bvadd .cse7 (bvmul .cse8 (_ bv9 64))) .cse11))) (let ((.cse16 (bvadd .cse7 (bvmul (_ bv6 64) .cse8)))) (and .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse16) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~y~0 .cse16) .cse6)) (let ((.cse17 (bvadd (bvmul (_ bv4 64) .cse8) .cse7))) (and .cse0 .cse2 (= ULTIMATE.start_main_~y~0 .cse17) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~c~0 .cse17))) (let ((.cse18 (bvadd .cse7 (bvmul (_ bv9 64) .cse8)))) (and .cse0 .cse2 (= ULTIMATE.start_main_~c~0 .cse18) .cse3 (= ULTIMATE.start_main_~y~0 .cse18) .cse4 .cse5 .cse6)) (let ((.cse19 (bvadd .cse7 (bvmul (_ bv7 64) .cse8)))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse19) .cse2 .cse3 (= ULTIMATE.start_main_~c~0 .cse19) .cse4 .cse5 .cse6)))))) [2021-10-13 06:57:24,482 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-13 06:57:24,483 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 06:57:24,483 INFO L857 garLoopResultBuilder]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2021-10-13 06:57:24,483 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and (= .cse0 ULTIMATE.start_main_~y~0) (= .cse0 ULTIMATE.start_main_~x~0) .cse1) (let ((.cse2 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse5 ((_ sign_extend 32) .cse2))) (let ((.cse4 (bvmul .cse5 ULTIMATE.start_main_~y~0)) (.cse3 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (bvsle .cse2 (_ bv10 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge .cse2 (_ bv0 32)) (= .cse0 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) .cse3 (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) .cse1 (= .cse3 .cse4) (let ((.cse6 ((_ sign_extend 32) (_ bv1 32)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse5)) (= (bvadd (bvmul .cse5 .cse6) .cse4) (bvadd .cse3 (bvmul (_ bv2 64) (bvmul .cse6 ULTIMATE.start_main_~y~0)) (bvmul .cse6 .cse6))) (bvslt (bvadd .cse6 ULTIMATE.start_main_~c~0) .cse5))))))))) [2021-10-13 06:57:24,483 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-13 06:57:24,484 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-13 06:57:24,488 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:57:24,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:57:24 BoogieIcfgContainer [2021-10-13 06:57:24,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:57:24,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:57:24,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:57:24,567 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:57:24,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:15" (3/4) ... [2021-10-13 06:57:24,575 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:57:24,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 06:57:24,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:57:24,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:57:24,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:57:24,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:57:24,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:57:24,676 INFO L168 Benchmark]: Toolchain (without parser) took 790828.32 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 53.9 MB in the beginning and 41.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:24,677 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:57:24,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.78 ms. Allocated memory is still 69.2 MB. Free memory was 53.7 MB in the beginning and 43.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:24,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.08 ms. Allocated memory is still 69.2 MB. Free memory was 43.1 MB in the beginning and 53.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:24,678 INFO L168 Benchmark]: Boogie Preprocessor took 27.85 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:57:24,678 INFO L168 Benchmark]: RCFGBuilder took 1526.44 ms. Allocated memory is still 69.2 MB. Free memory was 51.7 MB in the beginning and 41.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:24,679 INFO L168 Benchmark]: TraceAbstraction took 788839.51 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 40.9 MB in the beginning and 47.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:24,680 INFO L168 Benchmark]: Witness Printer took 108.74 ms. Allocated memory is still 96.5 MB. Free memory was 47.4 MB in the beginning and 41.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:24,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.78 ms. Allocated memory is still 69.2 MB. Free memory was 53.7 MB in the beginning and 43.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.08 ms. Allocated memory is still 69.2 MB. Free memory was 43.1 MB in the beginning and 53.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.85 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1526.44 ms. Allocated memory is still 69.2 MB. Free memory was 51.7 MB in the beginning and 41.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 788839.51 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 40.9 MB in the beginning and 47.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * Witness Printer took 108.74 ms. Allocated memory is still 96.5 MB. Free memory was 47.4 MB in the beginning and 41.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 788703.6ms, OverallIterations: 6, TraceHistogramMax: 11, EmptinessCheckTime: 13.6ms, AutomataDifference: 238080.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 113426.6ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 80 SDtfs, 368 SDslu, 473 SDs, 0 SdLazy, 1135 SolverSat, 470 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 65898.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 705 GetRequests, 497 SyntacticMatches, 10 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 402413.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 57.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 37 NumberOfFragments, 2045 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1331 FormulaSimplificationTreeSizeReduction, 264.4ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 7019 FormulaSimplificationTreeSizeReductionInter, 113155.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 123.6ms SsaConstructionTime, 27601.9ms SatisfiabilityAnalysisTime, 404453.8ms InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 620 ConstructedInterpolants, 9 QuantifiedInterpolants, 14479 SizeOfPredicates, 71 NumberOfNonLiveVariables, 910 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 28 InterpolantComputations, 4 PerfectInterpolantSequences, 15/1230 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32)))) && cond == 1bv32) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == c) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == y)) || (((((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) || ((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && ~sign_extendFrom8To32(0bv32) == y) && ~sign_extendFrom8To32(0bv32) == c) && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && cond == 1bv32)) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(8bv64, ~sign_extendFrom8To32(1bv32))) == y) && cond == 1bv32) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(8bv64, ~sign_extendFrom8To32(1bv32))) == c) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && c == ~bvadd16(~bvmul64(10bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~bvmul64(10bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~bvslt64(~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(~sign_extendFrom8To32(1bv32), 9bv64)), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(6bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(6bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && y == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && c == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32)))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(9bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(9bv64, ~sign_extendFrom8To32(1bv32)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(7bv64, ~sign_extendFrom8To32(1bv32)))) && cond == 1bv32) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(7bv64, ~sign_extendFrom8To32(1bv32)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && ~sign_extendFrom8To32(0bv32) == y) && ~sign_extendFrom8To32(0bv32) == c) && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32)))) && cond == 1bv32) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == c) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == y)) || (((((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && ~bvsle32(~sign_extendFrom8To32(k), 10bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(8bv64, ~sign_extendFrom8To32(1bv32))) == y) && cond == 1bv32) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(8bv64, ~sign_extendFrom8To32(1bv32))) == c) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && c == ~bvadd16(~bvmul64(10bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~bvmul64(10bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~bvslt64(~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(~sign_extendFrom8To32(1bv32), 9bv64)), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(6bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(6bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && y == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && c == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32)))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(9bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(9bv64, ~sign_extendFrom8To32(1bv32)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))))) || (((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(7bv64, ~sign_extendFrom8To32(1bv32)))) && cond == 1bv32) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(7bv64, ~sign_extendFrom8To32(1bv32)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) || ((((((~bvsle32(~sign_extendFrom8To32(k), 10bv32) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && cond == 1bv32) && ~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) && ((!~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))) || ~bvadd16(~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), ~sign_extendFrom8To32(1bv32)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) == ~bvadd16(~bvmul64(y, y), ~bvmul64(2bv64, ~bvmul64(~sign_extendFrom8To32(1bv32), y)), ~bvmul64(~sign_extendFrom8To32(1bv32), ~sign_extendFrom8To32(1bv32)))) || ~bvslt64(~bvadd16(~sign_extendFrom8To32(1bv32), c), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:57:24,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fed037-cdcf-42ec-8aeb-c7aed10b9cb3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...