./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs --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 2aa5407cbbf602a5374417ec4fab8df9660ad083 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs --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 2aa5407cbbf602a5374417ec4fab8df9660ad083 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:30:44,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:30:44,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:30:44,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:30:44,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:30:44,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:30:44,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:30:44,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:30:44,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:30:44,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:30:44,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:30:44,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:30:44,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:30:44,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:30:44,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:30:44,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:30:44,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:30:44,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:30:44,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:30:44,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:30:44,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:30:44,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:30:44,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:30:44,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:30:44,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:30:44,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:30:44,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:30:44,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:30:44,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:30:44,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:30:44,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:30:44,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:30:44,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:30:44,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:30:44,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:30:44,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:30:44,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:30:44,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:30:44,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:30:44,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:30:44,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:30:44,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:30:44,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:30:44,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:30:44,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:30:44,970 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:30:44,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:30:44,971 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:30:44,971 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:30:44,971 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:30:44,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:30:44,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:30:44,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:30:44,979 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:30:44,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:30:44,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:30:44,980 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:30:44,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:30:44,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:30:44,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:30:44,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:30:44,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:30:44,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:30:44,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:30:44,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:30:44,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:30:44,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:30:44,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:30:44,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:30:44,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:30:44,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:30:44,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:30:44,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:44,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:30:44,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:30:44,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:30:44,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:30:44,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:30:44,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:30:44,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:30:44,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:30:44,987 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aa5407cbbf602a5374417ec4fab8df9660ad083 [2021-10-16 02:30:45,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:30:45,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:30:45,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:30:45,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:30:45,279 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:30:45,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c [2021-10-16 02:30:45,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/9fac1956a/cb2824cdc109455683d75749759e6d54/FLAGfa04d0835 [2021-10-16 02:30:45,905 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:30:45,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c [2021-10-16 02:30:45,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/9fac1956a/cb2824cdc109455683d75749759e6d54/FLAGfa04d0835 [2021-10-16 02:30:46,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/9fac1956a/cb2824cdc109455683d75749759e6d54 [2021-10-16 02:30:46,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:30:46,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:30:46,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:46,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:30:46,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:30:46,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bda069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46, skipping insertion in model container [2021-10-16 02:30:46,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:30:46,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:30:46,571 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c[42757,42770] [2021-10-16 02:30:46,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:46,586 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:30:46,658 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c[42757,42770] [2021-10-16 02:30:46,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:46,682 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:30:46,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46 WrapperNode [2021-10-16 02:30:46,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:46,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:46,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:30:46,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:30:46,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:46,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:30:46,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:30:46,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:30:46,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:30:46,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:30:46,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:30:46,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:30:46,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (1/1) ... [2021-10-16 02:30:46,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:46,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:46,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:30:46,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:30:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:30:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:30:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:30:46,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:30:47,058 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:30:47,736 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:30:47,736 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:30:48,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:30:48,168 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:30:48,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:48 BoogieIcfgContainer [2021-10-16 02:30:48,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:30:48,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:30:48,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:30:48,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:30:48,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:30:46" (1/3) ... [2021-10-16 02:30:48,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2ffbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:48, skipping insertion in model container [2021-10-16 02:30:48,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:46" (2/3) ... [2021-10-16 02:30:48,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2ffbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:48, skipping insertion in model container [2021-10-16 02:30:48,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:48" (3/3) ... [2021-10-16 02:30:48,181 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3.cil.c [2021-10-16 02:30:48,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:30:48,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:30:48,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:30:48,260 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 [2021-10-16 02:30:48,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:30:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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) [2021-10-16 02:30:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:30:48,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:48,295 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:48,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1728656054, now seen corresponding path program 1 times [2021-10-16 02:30:48,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:48,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057682785] [2021-10-16 02:30:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:48,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:48,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:48,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057682785] [2021-10-16 02:30:48,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057682785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:48,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:48,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:30:48,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483452218] [2021-10-16 02:30:48,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:48,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:48,537 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:48,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:48,795 INFO L93 Difference]: Finished difference Result 231 states and 400 transitions. [2021-10-16 02:30:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-16 02:30:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:48,811 INFO L225 Difference]: With dead ends: 231 [2021-10-16 02:30:48,812 INFO L226 Difference]: Without dead ends: 121 [2021-10-16 02:30:48,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-16 02:30:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-10-16 02:30:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 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) [2021-10-16 02:30:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2021-10-16 02:30:48,879 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 39 [2021-10-16 02:30:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:48,880 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2021-10-16 02:30:48,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2021-10-16 02:30:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 02:30:48,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:48,886 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:48,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:30:48,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash -165449117, now seen corresponding path program 1 times [2021-10-16 02:30:48,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:48,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833130763] [2021-10-16 02:30:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:48,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:49,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:49,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833130763] [2021-10-16 02:30:49,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833130763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:49,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:49,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:49,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649763219] [2021-10-16 02:30:49,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:49,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:49,048 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-10-16 02:30:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:49,217 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2021-10-16 02:30:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:49,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-10-16 02:30:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:49,223 INFO L225 Difference]: With dead ends: 257 [2021-10-16 02:30:49,223 INFO L226 Difference]: Without dead ends: 140 [2021-10-16 02:30:49,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:49,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-16 02:30:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-10-16 02:30:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 states have internal predecessors, (196), 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) [2021-10-16 02:30:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2021-10-16 02:30:49,246 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 53 [2021-10-16 02:30:49,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:49,247 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2021-10-16 02:30:49,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-10-16 02:30:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2021-10-16 02:30:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-16 02:30:49,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:49,256 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:49,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:30:49,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash -882571025, now seen corresponding path program 1 times [2021-10-16 02:30:49,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:49,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718477731] [2021-10-16 02:30:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:49,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:30:49,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:49,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718477731] [2021-10-16 02:30:49,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718477731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:49,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:49,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:30:49,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942677546] [2021-10-16 02:30:49,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:49,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:49,362 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-10-16 02:30:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:49,552 INFO L93 Difference]: Finished difference Result 319 states and 470 transitions. [2021-10-16 02:30:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 70 [2021-10-16 02:30:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:49,556 INFO L225 Difference]: With dead ends: 319 [2021-10-16 02:30:49,556 INFO L226 Difference]: Without dead ends: 183 [2021-10-16 02:30:49,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-16 02:30:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2021-10-16 02:30:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 states have internal predecessors, (238), 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) [2021-10-16 02:30:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2021-10-16 02:30:49,581 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 70 [2021-10-16 02:30:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:49,581 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2021-10-16 02:30:49,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-10-16 02:30:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2021-10-16 02:30:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-16 02:30:49,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:49,584 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:49,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:30:49,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:49,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1686211633, now seen corresponding path program 1 times [2021-10-16 02:30:49,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:49,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992290633] [2021-10-16 02:30:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:49,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:30:49,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:49,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992290633] [2021-10-16 02:30:49,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992290633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:49,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:49,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:49,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396118698] [2021-10-16 02:30:49,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:49,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:49,751 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-10-16 02:30:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:49,884 INFO L93 Difference]: Finished difference Result 383 states and 532 transitions. [2021-10-16 02:30:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:49,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 90 [2021-10-16 02:30:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:49,888 INFO L225 Difference]: With dead ends: 383 [2021-10-16 02:30:49,889 INFO L226 Difference]: Without dead ends: 209 [2021-10-16 02:30:49,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-16 02:30:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-10-16 02:30:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3333333333333333) internal successors, (264), 198 states have internal predecessors, (264), 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) [2021-10-16 02:30:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2021-10-16 02:30:49,915 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 90 [2021-10-16 02:30:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:49,918 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2021-10-16 02:30:49,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-10-16 02:30:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2021-10-16 02:30:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-16 02:30:49,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:49,927 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:49,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:30:49,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 79101139, now seen corresponding path program 1 times [2021-10-16 02:30:49,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:49,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656681118] [2021-10-16 02:30:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:49,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:50,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:50,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656681118] [2021-10-16 02:30:50,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656681118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:30:50,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758089193] [2021-10-16 02:30:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:50,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:50,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:50,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:50,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:30:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:50,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:30:50,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:50,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-16 02:30:50,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758089193] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:30:50,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:30:50,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2021-10-16 02:30:50,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140583439] [2021-10-16 02:30:50,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:50,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:50,879 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-10-16 02:30:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:50,900 INFO L93 Difference]: Finished difference Result 395 states and 525 transitions. [2021-10-16 02:30:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:50,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 108 [2021-10-16 02:30:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:50,903 INFO L225 Difference]: With dead ends: 395 [2021-10-16 02:30:50,903 INFO L226 Difference]: Without dead ends: 393 [2021-10-16 02:30:50,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-10-16 02:30:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 392. [2021-10-16 02:30:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.3350383631713556) internal successors, (522), 391 states have internal predecessors, (522), 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) [2021-10-16 02:30:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 522 transitions. [2021-10-16 02:30:50,918 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 522 transitions. Word has length 108 [2021-10-16 02:30:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:50,919 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 522 transitions. [2021-10-16 02:30:50,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-10-16 02:30:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 522 transitions. [2021-10-16 02:30:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-16 02:30:50,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:50,921 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:50,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:51,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:51,138 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1746654931, now seen corresponding path program 1 times [2021-10-16 02:30:51,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:51,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067395591] [2021-10-16 02:30:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:51,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:30:51,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:51,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067395591] [2021-10-16 02:30:51,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067395591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:51,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:51,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:51,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848996685] [2021-10-16 02:30:51,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:51,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,233 INFO L87 Difference]: Start difference. First operand 392 states and 522 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-10-16 02:30:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:51,397 INFO L93 Difference]: Finished difference Result 880 states and 1216 transitions. [2021-10-16 02:30:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 142 [2021-10-16 02:30:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:51,401 INFO L225 Difference]: With dead ends: 880 [2021-10-16 02:30:51,401 INFO L226 Difference]: Without dead ends: 490 [2021-10-16 02:30:51,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-16 02:30:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 470. [2021-10-16 02:30:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.304904051172708) internal successors, (612), 469 states have internal predecessors, (612), 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) [2021-10-16 02:30:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 612 transitions. [2021-10-16 02:30:51,418 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 612 transitions. Word has length 142 [2021-10-16 02:30:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:51,419 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 612 transitions. [2021-10-16 02:30:51,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-10-16 02:30:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 612 transitions. [2021-10-16 02:30:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-16 02:30:51,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:51,421 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:51,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:30:51,422 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:51,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:51,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1093150163, now seen corresponding path program 1 times [2021-10-16 02:30:51,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:51,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895492549] [2021-10-16 02:30:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:51,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-10-16 02:30:51,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:51,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895492549] [2021-10-16 02:30:51,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895492549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:51,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:51,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:51,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466984138] [2021-10-16 02:30:51,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:51,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:51,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:51,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,474 INFO L87 Difference]: Start difference. First operand 470 states and 612 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-10-16 02:30:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:51,621 INFO L93 Difference]: Finished difference Result 1004 states and 1340 transitions. [2021-10-16 02:30:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:51,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 148 [2021-10-16 02:30:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:51,626 INFO L225 Difference]: With dead ends: 1004 [2021-10-16 02:30:51,626 INFO L226 Difference]: Without dead ends: 536 [2021-10-16 02:30:51,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-16 02:30:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 520. [2021-10-16 02:30:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.2870905587668593) internal successors, (668), 519 states have internal predecessors, (668), 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) [2021-10-16 02:30:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 668 transitions. [2021-10-16 02:30:51,644 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 668 transitions. Word has length 148 [2021-10-16 02:30:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:51,645 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 668 transitions. [2021-10-16 02:30:51,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-10-16 02:30:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 668 transitions. [2021-10-16 02:30:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-10-16 02:30:51,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:51,648 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:51,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:30:51,649 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:51,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1248318634, now seen corresponding path program 1 times [2021-10-16 02:30:51,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:51,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400965430] [2021-10-16 02:30:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:51,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:30:51,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:51,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400965430] [2021-10-16 02:30:51,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400965430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:51,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:51,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:51,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40569046] [2021-10-16 02:30:51,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:51,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,704 INFO L87 Difference]: Start difference. First operand 520 states and 668 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-10-16 02:30:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:51,866 INFO L93 Difference]: Finished difference Result 1144 states and 1516 transitions. [2021-10-16 02:30:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:51,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 151 [2021-10-16 02:30:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:51,870 INFO L225 Difference]: With dead ends: 1144 [2021-10-16 02:30:51,871 INFO L226 Difference]: Without dead ends: 624 [2021-10-16 02:30:51,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-16 02:30:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 614. [2021-10-16 02:30:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.3409461663947797) internal successors, (822), 613 states have internal predecessors, (822), 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) [2021-10-16 02:30:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 822 transitions. [2021-10-16 02:30:51,893 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 822 transitions. Word has length 151 [2021-10-16 02:30:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:51,893 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 822 transitions. [2021-10-16 02:30:51,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-10-16 02:30:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 822 transitions. [2021-10-16 02:30:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-10-16 02:30:51,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:51,897 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:51,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:30:51,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:51,898 INFO L82 PathProgramCache]: Analyzing trace with hash -675078953, now seen corresponding path program 1 times [2021-10-16 02:30:51,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:51,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235692719] [2021-10-16 02:30:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:51,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-16 02:30:51,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:51,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235692719] [2021-10-16 02:30:51,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235692719] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:51,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:51,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:51,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56034276] [2021-10-16 02:30:51,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:51,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:51,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:51,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:51,952 INFO L87 Difference]: Start difference. First operand 614 states and 822 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-10-16 02:30:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:52,102 INFO L93 Difference]: Finished difference Result 1284 states and 1740 transitions. [2021-10-16 02:30:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:52,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 170 [2021-10-16 02:30:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:52,107 INFO L225 Difference]: With dead ends: 1284 [2021-10-16 02:30:52,107 INFO L226 Difference]: Without dead ends: 672 [2021-10-16 02:30:52,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-16 02:30:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 668. [2021-10-16 02:30:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.3223388305847077) internal successors, (882), 667 states have internal predecessors, (882), 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) [2021-10-16 02:30:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 882 transitions. [2021-10-16 02:30:52,135 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 882 transitions. Word has length 170 [2021-10-16 02:30:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:52,136 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 882 transitions. [2021-10-16 02:30:52,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-10-16 02:30:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 882 transitions. [2021-10-16 02:30:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-16 02:30:52,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:52,140 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:52,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:30:52,140 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:52,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:52,141 INFO L82 PathProgramCache]: Analyzing trace with hash 47635662, now seen corresponding path program 1 times [2021-10-16 02:30:52,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:52,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140329232] [2021-10-16 02:30:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:52,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-16 02:30:52,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:52,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140329232] [2021-10-16 02:30:52,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140329232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:52,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:52,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:52,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871343125] [2021-10-16 02:30:52,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:52,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:52,202 INFO L87 Difference]: Start difference. First operand 668 states and 882 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-10-16 02:30:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:52,343 INFO L93 Difference]: Finished difference Result 1392 states and 1864 transitions. [2021-10-16 02:30:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 175 [2021-10-16 02:30:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:52,348 INFO L225 Difference]: With dead ends: 1392 [2021-10-16 02:30:52,348 INFO L226 Difference]: Without dead ends: 726 [2021-10-16 02:30:52,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-10-16 02:30:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2021-10-16 02:30:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 1.3048275862068965) internal successors, (946), 725 states have internal predecessors, (946), 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) [2021-10-16 02:30:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 946 transitions. [2021-10-16 02:30:52,373 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 946 transitions. Word has length 175 [2021-10-16 02:30:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:52,373 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 946 transitions. [2021-10-16 02:30:52,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-10-16 02:30:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 946 transitions. [2021-10-16 02:30:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-16 02:30:52,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:52,377 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:52,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:30:52,378 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:52,379 INFO L82 PathProgramCache]: Analyzing trace with hash -78866213, now seen corresponding path program 1 times [2021-10-16 02:30:52,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:52,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408895679] [2021-10-16 02:30:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:52,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 303 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 02:30:52,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:52,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408895679] [2021-10-16 02:30:52,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408895679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:30:52,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871770269] [2021-10-16 02:30:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:52,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:52,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:52,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:52,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:30:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:52,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:30:52,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-16 02:30:53,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-16 02:30:53,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871770269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:53,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:30:53,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [4] total 7 [2021-10-16 02:30:53,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930478399] [2021-10-16 02:30:53,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:30:53,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:30:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:53,630 INFO L87 Difference]: Start difference. First operand 726 states and 946 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2021-10-16 02:30:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:54,011 INFO L93 Difference]: Finished difference Result 1578 states and 2113 transitions. [2021-10-16 02:30:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:30:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 202 [2021-10-16 02:30:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:54,017 INFO L225 Difference]: With dead ends: 1578 [2021-10-16 02:30:54,017 INFO L226 Difference]: Without dead ends: 772 [2021-10-16 02:30:54,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-16 02:30:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 747. [2021-10-16 02:30:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.292225201072386) internal successors, (964), 746 states have internal predecessors, (964), 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) [2021-10-16 02:30:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 964 transitions. [2021-10-16 02:30:54,068 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 964 transitions. Word has length 202 [2021-10-16 02:30:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:54,070 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 964 transitions. [2021-10-16 02:30:54,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2021-10-16 02:30:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 964 transitions. [2021-10-16 02:30:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-10-16 02:30:54,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:54,074 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:54,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:54,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:54,298 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:54,298 INFO L82 PathProgramCache]: Analyzing trace with hash -429966401, now seen corresponding path program 1 times [2021-10-16 02:30:54,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:54,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834248068] [2021-10-16 02:30:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:54,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 02:30:54,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:54,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834248068] [2021-10-16 02:30:54,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834248068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:30:54,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122029065] [2021-10-16 02:30:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:54,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:54,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:54,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:54,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:30:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:54,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:30:54,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 02:30:55,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 02:30:55,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122029065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:55,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222304923] [2021-10-16 02:30:55,741 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-10-16 02:30:55,742 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:30:55,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:30:55,755 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:30:55,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:30:56,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:30:57,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:30:57,005 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:30:57,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:30:57,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-16 02:30:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,099 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 [2021-10-16 02:30:57,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:30:57,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:30:57,102 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:30:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,139 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 [2021-10-16 02:30:57,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:30:57,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:30:57,146 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:30:57,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:57,177 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 [2021-10-16 02:30:57,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:30:57,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:30:57,180 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:30:57,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:57,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:57,450 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-16 02:30:57,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-16 02:30:57,502 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 02:30:57,503 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-16 02:30:57,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:57,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-16 02:30:57,722 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_22| 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) [2021-10-16 02:30:57,727 INFO L168 Benchmark]: Toolchain (without parser) took 11491.70 ms. Allocated memory was 111.1 MB in the beginning and 201.3 MB in the end (delta: 90.2 MB). Free memory was 78.9 MB in the beginning and 48.3 MB in the end (delta: 30.6 MB). Peak memory consumption was 119.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:57,727 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 111.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:30:57,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.50 ms. Allocated memory is still 111.1 MB. Free memory was 78.9 MB in the beginning and 81.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:57,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.08 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 78.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:57,728 INFO L168 Benchmark]: Boogie Preprocessor took 52.44 ms. Allocated memory is still 111.1 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:57,733 INFO L168 Benchmark]: RCFGBuilder took 1344.83 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 76.6 MB in the beginning and 84.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:57,734 INFO L168 Benchmark]: TraceAbstraction took 9552.62 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 83.4 MB in the beginning and 48.3 MB in the end (delta: 35.2 MB). Peak memory consumption was 101.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:57,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 111.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 443.50 ms. Allocated memory is still 111.1 MB. Free memory was 78.9 MB in the beginning and 81.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.08 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 78.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.44 ms. Allocated memory is still 111.1 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1344.83 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 76.6 MB in the beginning and 84.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9552.62 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 83.4 MB in the beginning and 48.3 MB in the end (delta: 35.2 MB). Peak memory consumption was 101.9 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_22| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_22|: 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. [2021-10-16 02:30:57,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:31:00,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:00,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:00,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:00,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:00,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:00,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:00,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:00,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:00,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:00,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:00,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:00,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:00,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:00,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:00,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:00,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:00,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:00,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:00,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:00,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:00,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:00,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:00,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:00,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:00,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:00,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:00,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:00,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:00,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:00,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:00,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:00,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:00,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:00,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:00,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:00,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:00,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:00,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:00,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:00,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:00,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:31:00,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:00,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:00,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:00,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:00,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:00,408 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:00,408 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:00,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:00,409 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:00,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:00,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:00,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:00,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:00,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:31:00,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:00,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:31:00,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:00,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:31:00,413 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:31:00,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:00,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:31:00,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:00,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:31:00,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:00,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:31:00,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:00,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:00,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:00,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:00,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:31:00,416 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:31:00,416 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:00,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:31:00,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:00,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:00,418 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aa5407cbbf602a5374417ec4fab8df9660ad083 [2021-10-16 02:31:00,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:00,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:00,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:00,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:00,917 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:00,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c [2021-10-16 02:31:00,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/759f67043/21c4cad3fb91478d8bcfb0a4d3479da5/FLAGa5771dd00 [2021-10-16 02:31:01,538 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:01,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c [2021-10-16 02:31:01,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/759f67043/21c4cad3fb91478d8bcfb0a4d3479da5/FLAGa5771dd00 [2021-10-16 02:31:01,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/data/759f67043/21c4cad3fb91478d8bcfb0a4d3479da5 [2021-10-16 02:31:01,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:01,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:01,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:01,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:01,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:01,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:01" (1/1) ... [2021-10-16 02:31:01,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c45609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:01, skipping insertion in model container [2021-10-16 02:31:01,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:01" (1/1) ... [2021-10-16 02:31:01,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:01,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:02,221 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c[42757,42770] [2021-10-16 02:31:02,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:02,258 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:31:02,363 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_2a254288-59e5-4c20-9d45-4d2cf9923f1f/sv-benchmarks/c/openssl-simplified/s3_srvr_3.cil.c[42757,42770] [2021-10-16 02:31:02,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:02,385 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:31:02,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02 WrapperNode [2021-10-16 02:31:02,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:02,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:02,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:31:02,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:31:02,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:02,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:31:02,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:31:02,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:31:02,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:31:02,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:31:02,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:31:02,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:31:02,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (1/1) ... [2021-10-16 02:31:02,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:02,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:02,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:31:02,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:31:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:31:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:31:02,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:31:02,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:31:02,755 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:31:03,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:31:03,292 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:31:03,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:31:03,310 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:31:03,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:03 BoogieIcfgContainer [2021-10-16 02:31:03,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:31:03,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:31:03,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:31:03,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:31:03,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:01" (1/3) ... [2021-10-16 02:31:03,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2230aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:03, skipping insertion in model container [2021-10-16 02:31:03,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:02" (2/3) ... [2021-10-16 02:31:03,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2230aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:03, skipping insertion in model container [2021-10-16 02:31:03,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:03" (3/3) ... [2021-10-16 02:31:03,322 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3.cil.c [2021-10-16 02:31:03,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:31:03,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:31:03,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:31:03,392 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 [2021-10-16 02:31:03,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:31:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 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) [2021-10-16 02:31:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 02:31:03,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:03,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:03,423 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:03,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1632006987, now seen corresponding path program 1 times [2021-10-16 02:31:03,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:03,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398465065] [2021-10-16 02:31:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:03,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:03,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:03,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:03,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:31:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:03,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:31:03,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:03,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:04,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398465065] [2021-10-16 02:31:04,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398465065] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:04,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:04,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:04,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639145382] [2021-10-16 02:31:04,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:04,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:04,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:04,059 INFO L87 Difference]: Start difference. First operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 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 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-16 02:31:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:04,310 INFO L93 Difference]: Finished difference Result 302 states and 514 transitions. [2021-10-16 02:31:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 [2021-10-16 02:31:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:04,322 INFO L225 Difference]: With dead ends: 302 [2021-10-16 02:31:04,322 INFO L226 Difference]: Without dead ends: 149 [2021-10-16 02:31:04,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-16 02:31:04,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-10-16 02:31:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 145 states have internal predecessors, (219), 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) [2021-10-16 02:31:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-10-16 02:31:04,416 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 44 [2021-10-16 02:31:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:04,417 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-10-16 02:31:04,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-16 02:31:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-10-16 02:31:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 02:31:04,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:04,422 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:04,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:04,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:04,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:04,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:04,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1827606837, now seen corresponding path program 1 times [2021-10-16 02:31:04,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:04,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082238360] [2021-10-16 02:31:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:04,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:04,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:04,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:04,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:31:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:04,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:04,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:04,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:05,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:05,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082238360] [2021-10-16 02:31:05,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082238360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:05,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:05,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:05,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619811078] [2021-10-16 02:31:05,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:05,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:05,096 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:05,294 INFO L93 Difference]: Finished difference Result 309 states and 470 transitions. [2021-10-16 02:31:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-16 02:31:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:05,298 INFO L225 Difference]: With dead ends: 309 [2021-10-16 02:31:05,298 INFO L226 Difference]: Without dead ends: 171 [2021-10-16 02:31:05,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-16 02:31:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-10-16 02:31:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 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) [2021-10-16 02:31:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-16 02:31:05,315 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 60 [2021-10-16 02:31:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:05,315 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-16 02:31:05,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-16 02:31:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:31:05,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:05,320 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:05,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:05,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:05,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash -445123559, now seen corresponding path program 1 times [2021-10-16 02:31:05,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:05,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515377861] [2021-10-16 02:31:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:05,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:05,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:05,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:05,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:31:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:05,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:05,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:31:05,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:31:06,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:06,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515377861] [2021-10-16 02:31:06,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515377861] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:06,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:06,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:06,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218325742] [2021-10-16 02:31:06,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:06,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:06,100 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:06,316 INFO L93 Difference]: Finished difference Result 372 states and 561 transitions. [2021-10-16 02:31:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:06,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 02:31:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:06,319 INFO L225 Difference]: With dead ends: 372 [2021-10-16 02:31:06,320 INFO L226 Difference]: Without dead ends: 213 [2021-10-16 02:31:06,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-16 02:31:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2021-10-16 02:31:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4038461538461537) internal successors, (292), 208 states have internal predecessors, (292), 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) [2021-10-16 02:31:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2021-10-16 02:31:06,335 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 81 [2021-10-16 02:31:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:06,336 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2021-10-16 02:31:06,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2021-10-16 02:31:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:31:06,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:06,341 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:06,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:06,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:06,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash -196977065, now seen corresponding path program 1 times [2021-10-16 02:31:06,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:06,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187765230] [2021-10-16 02:31:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:06,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:06,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:06,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:31:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:06,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:06,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:31:06,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:31:07,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:07,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187765230] [2021-10-16 02:31:07,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187765230] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:07,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:07,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:07,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419446566] [2021-10-16 02:31:07,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:07,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:07,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:07,208 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:07,359 INFO L93 Difference]: Finished difference Result 437 states and 619 transitions. [2021-10-16 02:31:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 02:31:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:07,361 INFO L225 Difference]: With dead ends: 437 [2021-10-16 02:31:07,361 INFO L226 Difference]: Without dead ends: 236 [2021-10-16 02:31:07,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-16 02:31:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2021-10-16 02:31:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 231 states have internal predecessors, (320), 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) [2021-10-16 02:31:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 320 transitions. [2021-10-16 02:31:07,377 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 320 transitions. Word has length 81 [2021-10-16 02:31:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:07,378 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 320 transitions. [2021-10-16 02:31:07,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 320 transitions. [2021-10-16 02:31:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-16 02:31:07,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:07,383 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:07,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:31:07,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:07,590 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:07,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash -6893799, now seen corresponding path program 1 times [2021-10-16 02:31:07,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:07,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813208747] [2021-10-16 02:31:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:07,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:07,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:07,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:31:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:07,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:07,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:31:08,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:31:08,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:08,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813208747] [2021-10-16 02:31:08,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813208747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:08,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:08,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:08,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808564305] [2021-10-16 02:31:08,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:08,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:08,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:08,296 INFO L87 Difference]: Start difference. First operand 232 states and 320 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-10-16 02:31:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:08,473 INFO L93 Difference]: Finished difference Result 494 states and 695 transitions. [2021-10-16 02:31:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 102 [2021-10-16 02:31:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:08,480 INFO L225 Difference]: With dead ends: 494 [2021-10-16 02:31:08,480 INFO L226 Difference]: Without dead ends: 270 [2021-10-16 02:31:08,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-16 02:31:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2021-10-16 02:31:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3671875) internal successors, (350), 256 states have internal predecessors, (350), 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) [2021-10-16 02:31:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 350 transitions. [2021-10-16 02:31:08,495 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 350 transitions. Word has length 102 [2021-10-16 02:31:08,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:08,496 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 350 transitions. [2021-10-16 02:31:08,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-10-16 02:31:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 350 transitions. [2021-10-16 02:31:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 02:31:08,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:08,499 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:08,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:08,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:08,713 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1361423817, now seen corresponding path program 1 times [2021-10-16 02:31:08,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:08,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441051405] [2021-10-16 02:31:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:08,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:08,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:08,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:08,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:31:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:08,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:08,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:31:09,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:31:09,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:09,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441051405] [2021-10-16 02:31:09,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441051405] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:09,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:09,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:31:09,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090685041] [2021-10-16 02:31:09,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:09,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:09,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:09,571 INFO L87 Difference]: Start difference. First operand 257 states and 350 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2021-10-16 02:31:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:09,622 INFO L93 Difference]: Finished difference Result 993 states and 1353 transitions. [2021-10-16 02:31:09,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:09,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 121 [2021-10-16 02:31:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:09,628 INFO L225 Difference]: With dead ends: 993 [2021-10-16 02:31:09,628 INFO L226 Difference]: Without dead ends: 744 [2021-10-16 02:31:09,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-16 02:31:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2021-10-16 02:31:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.3580080753701211) internal successors, (1009), 743 states have internal predecessors, (1009), 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) [2021-10-16 02:31:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1009 transitions. [2021-10-16 02:31:09,664 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1009 transitions. Word has length 121 [2021-10-16 02:31:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:09,664 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1009 transitions. [2021-10-16 02:31:09,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2021-10-16 02:31:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1009 transitions. [2021-10-16 02:31:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-16 02:31:09,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:09,669 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:09,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:09,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:09,881 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1115911210, now seen corresponding path program 1 times [2021-10-16 02:31:09,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:09,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847529054] [2021-10-16 02:31:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:09,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:09,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:09,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:09,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:31:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:10,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:10,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:31:10,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:31:10,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:10,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847529054] [2021-10-16 02:31:10,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847529054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:10,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:10,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:31:10,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210899954] [2021-10-16 02:31:10,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:10,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:10,950 INFO L87 Difference]: Start difference. First operand 744 states and 1009 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-16 02:31:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:11,282 INFO L93 Difference]: Finished difference Result 1740 states and 2486 transitions. [2021-10-16 02:31:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 159 [2021-10-16 02:31:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:11,290 INFO L225 Difference]: With dead ends: 1740 [2021-10-16 02:31:11,290 INFO L226 Difference]: Without dead ends: 1004 [2021-10-16 02:31:11,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-16 02:31:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 984. [2021-10-16 02:31:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 1.3865717192268565) internal successors, (1363), 983 states have internal predecessors, (1363), 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) [2021-10-16 02:31:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1363 transitions. [2021-10-16 02:31:11,339 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1363 transitions. Word has length 159 [2021-10-16 02:31:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:11,340 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1363 transitions. [2021-10-16 02:31:11,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-16 02:31:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1363 transitions. [2021-10-16 02:31:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-10-16 02:31:11,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:11,345 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:11,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:11,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:11,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:11,558 INFO L82 PathProgramCache]: Analyzing trace with hash -40374979, now seen corresponding path program 1 times [2021-10-16 02:31:11,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:11,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764179559] [2021-10-16 02:31:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:11,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:11,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:11,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:31:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:11,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:11,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-10-16 02:31:12,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-10-16 02:31:12,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:12,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764179559] [2021-10-16 02:31:12,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764179559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:12,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:12,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:12,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835500651] [2021-10-16 02:31:12,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:12,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:12,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:12,680 INFO L87 Difference]: Start difference. First operand 984 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-16 02:31:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:12,859 INFO L93 Difference]: Finished difference Result 2065 states and 2903 transitions. [2021-10-16 02:31:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 167 [2021-10-16 02:31:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:12,867 INFO L225 Difference]: With dead ends: 2065 [2021-10-16 02:31:12,867 INFO L226 Difference]: Without dead ends: 1089 [2021-10-16 02:31:12,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-10-16 02:31:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1065. [2021-10-16 02:31:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 1.3712406015037595) internal successors, (1459), 1064 states have internal predecessors, (1459), 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) [2021-10-16 02:31:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1459 transitions. [2021-10-16 02:31:12,906 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1459 transitions. Word has length 167 [2021-10-16 02:31:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:12,907 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1459 transitions. [2021-10-16 02:31:12,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-16 02:31:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1459 transitions. [2021-10-16 02:31:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-10-16 02:31:12,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:12,912 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:12,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:13,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:13,125 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:13,125 INFO L82 PathProgramCache]: Analyzing trace with hash 507002515, now seen corresponding path program 1 times [2021-10-16 02:31:13,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:13,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73798855] [2021-10-16 02:31:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:13,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:13,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:13,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:13,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:31:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:13,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:13,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-10-16 02:31:13,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-10-16 02:31:14,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:14,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73798855] [2021-10-16 02:31:14,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73798855] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:14,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:14,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:14,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120970866] [2021-10-16 02:31:14,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:14,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:14,384 INFO L87 Difference]: Start difference. First operand 1065 states and 1459 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-16 02:31:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:14,551 INFO L93 Difference]: Finished difference Result 2215 states and 3074 transitions. [2021-10-16 02:31:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 190 [2021-10-16 02:31:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:14,559 INFO L225 Difference]: With dead ends: 2215 [2021-10-16 02:31:14,559 INFO L226 Difference]: Without dead ends: 1158 [2021-10-16 02:31:14,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-10-16 02:31:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1152. [2021-10-16 02:31:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.3562119895742832) internal successors, (1561), 1151 states have internal predecessors, (1561), 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) [2021-10-16 02:31:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1561 transitions. [2021-10-16 02:31:14,598 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1561 transitions. Word has length 190 [2021-10-16 02:31:14,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:14,599 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1561 transitions. [2021-10-16 02:31:14,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-16 02:31:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1561 transitions. [2021-10-16 02:31:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-10-16 02:31:14,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:14,604 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:14,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:14,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:14,819 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:14,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:14,819 INFO L82 PathProgramCache]: Analyzing trace with hash 527487540, now seen corresponding path program 1 times [2021-10-16 02:31:14,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:14,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123289430] [2021-10-16 02:31:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:14,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:14,821 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:14,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:31:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:15,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:31:15,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-16 02:31:15,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-16 02:31:16,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:16,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123289430] [2021-10-16 02:31:16,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123289430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:16,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:16,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:31:16,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145938553] [2021-10-16 02:31:16,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:16,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:16,509 INFO L87 Difference]: Start difference. First operand 1152 states and 1561 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-10-16 02:31:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:16,757 INFO L93 Difference]: Finished difference Result 7818 states and 10603 transitions. [2021-10-16 02:31:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:31:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 195 [2021-10-16 02:31:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:16,796 INFO L225 Difference]: With dead ends: 7818 [2021-10-16 02:31:16,796 INFO L226 Difference]: Without dead ends: 6674 [2021-10-16 02:31:16,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:31:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2021-10-16 02:31:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 2291. [2021-10-16 02:31:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2290 states have (on average 1.3537117903930131) internal successors, (3100), 2290 states have internal predecessors, (3100), 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) [2021-10-16 02:31:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3100 transitions. [2021-10-16 02:31:16,964 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3100 transitions. Word has length 195 [2021-10-16 02:31:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:16,965 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 3100 transitions. [2021-10-16 02:31:16,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-10-16 02:31:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3100 transitions. [2021-10-16 02:31:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-16 02:31:16,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:16,971 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:16,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:17,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:17,172 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:17,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1251277962, now seen corresponding path program 1 times [2021-10-16 02:31:17,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:17,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466251842] [2021-10-16 02:31:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:17,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:17,174 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:17,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:31:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:17,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:17,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-16 02:31:18,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-16 02:31:18,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:18,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466251842] [2021-10-16 02:31:18,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466251842] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:18,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:18,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:18,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363308613] [2021-10-16 02:31:18,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:18,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:18,618 INFO L87 Difference]: Start difference. First operand 2291 states and 3100 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-10-16 02:31:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:18,839 INFO L93 Difference]: Finished difference Result 4760 states and 6536 transitions. [2021-10-16 02:31:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:18,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 196 [2021-10-16 02:31:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:18,854 INFO L225 Difference]: With dead ends: 4760 [2021-10-16 02:31:18,854 INFO L226 Difference]: Without dead ends: 2477 [2021-10-16 02:31:18,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-10-16 02:31:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2477. [2021-10-16 02:31:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.3392568659127626) internal successors, (3316), 2476 states have internal predecessors, (3316), 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) [2021-10-16 02:31:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3316 transitions. [2021-10-16 02:31:18,974 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3316 transitions. Word has length 196 [2021-10-16 02:31:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:18,974 INFO L470 AbstractCegarLoop]: Abstraction has 2477 states and 3316 transitions. [2021-10-16 02:31:18,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-10-16 02:31:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3316 transitions. [2021-10-16 02:31:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-10-16 02:31:18,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:18,982 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:18,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:19,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:19,199 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1249720303, now seen corresponding path program 1 times [2021-10-16 02:31:19,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:19,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163990920] [2021-10-16 02:31:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:19,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:19,201 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:19,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:31:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:19,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:19,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 314 proven. 26 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-16 02:31:20,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 314 proven. 26 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-16 02:31:20,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:20,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163990920] [2021-10-16 02:31:20,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163990920] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:20,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1807866698] [2021-10-16 02:31:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:20,865 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:20,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:20,867 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:20,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 02:31:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:21,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:21,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-10-16 02:31:22,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-10-16 02:31:23,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1807866698] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:23,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:31:23,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-10-16 02:31:23,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281522039] [2021-10-16 02:31:23,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:23,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:23,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:23,224 INFO L87 Difference]: Start difference. First operand 2477 states and 3316 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-10-16 02:31:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:23,344 INFO L93 Difference]: Finished difference Result 7177 states and 9646 transitions. [2021-10-16 02:31:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 223 [2021-10-16 02:31:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:23,372 INFO L225 Difference]: With dead ends: 7177 [2021-10-16 02:31:23,372 INFO L226 Difference]: Without dead ends: 4708 [2021-10-16 02:31:23,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-10-16 02:31:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4706. [2021-10-16 02:31:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4705 states have (on average 1.344739638682253) internal successors, (6327), 4705 states have internal predecessors, (6327), 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) [2021-10-16 02:31:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 6327 transitions. [2021-10-16 02:31:23,588 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 6327 transitions. Word has length 223 [2021-10-16 02:31:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:23,589 INFO L470 AbstractCegarLoop]: Abstraction has 4706 states and 6327 transitions. [2021-10-16 02:31:23,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-10-16 02:31:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 6327 transitions. [2021-10-16 02:31:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-10-16 02:31:23,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:23,598 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:23,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:23,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-16 02:31:24,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:24,014 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:24,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1107406070, now seen corresponding path program 1 times [2021-10-16 02:31:24,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:24,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672358493] [2021-10-16 02:31:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:24,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:24,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:24,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:24,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:31:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:24,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:24,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 02:31:25,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 02:31:25,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:25,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672358493] [2021-10-16 02:31:25,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672358493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:25,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:25,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:31:25,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262004906] [2021-10-16 02:31:25,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:25,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:25,769 INFO L87 Difference]: Start difference. First operand 4706 states and 6327 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-10-16 02:31:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:26,180 INFO L93 Difference]: Finished difference Result 8796 states and 12184 transitions. [2021-10-16 02:31:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:26,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 229 [2021-10-16 02:31:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:26,202 INFO L225 Difference]: With dead ends: 8796 [2021-10-16 02:31:26,202 INFO L226 Difference]: Without dead ends: 3656 [2021-10-16 02:31:26,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-10-16 02:31:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3616. [2021-10-16 02:31:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 1.3773167358229599) internal successors, (4979), 3615 states have internal predecessors, (4979), 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) [2021-10-16 02:31:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4979 transitions. [2021-10-16 02:31:26,347 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4979 transitions. Word has length 229 [2021-10-16 02:31:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:26,348 INFO L470 AbstractCegarLoop]: Abstraction has 3616 states and 4979 transitions. [2021-10-16 02:31:26,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-10-16 02:31:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4979 transitions. [2021-10-16 02:31:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-10-16 02:31:26,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:26,358 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:26,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:26,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:26,572 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:26,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1947584051, now seen corresponding path program 1 times [2021-10-16 02:31:26,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:26,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110176341] [2021-10-16 02:31:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:26,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:26,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:26,575 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:26,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:31:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:27,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:27,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 454 proven. 26 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-10-16 02:31:28,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 454 proven. 26 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-10-16 02:31:28,678 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:28,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110176341] [2021-10-16 02:31:28,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110176341] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:28,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [613062909] [2021-10-16 02:31:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:28,678 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:28,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:28,679 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:28,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 02:31:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:30,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:30,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-10-16 02:31:30,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-10-16 02:31:31,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [613062909] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:31,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:31:31,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 6 [2021-10-16 02:31:31,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873036511] [2021-10-16 02:31:31,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:31,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:31,513 INFO L87 Difference]: Start difference. First operand 3616 states and 4979 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-10-16 02:31:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:31,666 INFO L93 Difference]: Finished difference Result 8133 states and 11203 transitions. [2021-10-16 02:31:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:31,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 263 [2021-10-16 02:31:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:31,710 INFO L225 Difference]: With dead ends: 8133 [2021-10-16 02:31:31,710 INFO L226 Difference]: Without dead ends: 4525 [2021-10-16 02:31:31,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2021-10-16 02:31:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 4525. [2021-10-16 02:31:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4524 states have (on average 1.3757736516357206) internal successors, (6224), 4524 states have internal predecessors, (6224), 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) [2021-10-16 02:31:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 6224 transitions. [2021-10-16 02:31:31,902 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 6224 transitions. Word has length 263 [2021-10-16 02:31:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:31,902 INFO L470 AbstractCegarLoop]: Abstraction has 4525 states and 6224 transitions. [2021-10-16 02:31:31,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-10-16 02:31:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 6224 transitions. [2021-10-16 02:31:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-10-16 02:31:31,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:31,916 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:31,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:32,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:32,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:32,330 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:32,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1414485870, now seen corresponding path program 1 times [2021-10-16 02:31:32,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:32,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986144256] [2021-10-16 02:31:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:32,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:32,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:32,333 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:32,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:31:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:33,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:33,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-16 02:31:34,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-16 02:31:34,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:34,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986144256] [2021-10-16 02:31:34,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986144256] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:34,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:34,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:34,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945280444] [2021-10-16 02:31:34,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:34,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:34,839 INFO L87 Difference]: Start difference. First operand 4525 states and 6224 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-10-16 02:31:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:34,933 INFO L93 Difference]: Finished difference Result 7309 states and 10034 transitions. [2021-10-16 02:31:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 269 [2021-10-16 02:31:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:34,940 INFO L225 Difference]: With dead ends: 7309 [2021-10-16 02:31:34,940 INFO L226 Difference]: Without dead ends: 2776 [2021-10-16 02:31:34,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-10-16 02:31:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2735. [2021-10-16 02:31:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2734 states have (on average 1.373811265544989) internal successors, (3756), 2734 states have internal predecessors, (3756), 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) [2021-10-16 02:31:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3756 transitions. [2021-10-16 02:31:35,165 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3756 transitions. Word has length 269 [2021-10-16 02:31:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:35,166 INFO L470 AbstractCegarLoop]: Abstraction has 2735 states and 3756 transitions. [2021-10-16 02:31:35,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-10-16 02:31:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3756 transitions. [2021-10-16 02:31:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-10-16 02:31:35,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:35,192 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:35,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:35,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:35,406 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1108744117, now seen corresponding path program 1 times [2021-10-16 02:31:35,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:35,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793942508] [2021-10-16 02:31:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:35,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:35,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:35,409 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:35,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:31:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:36,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:36,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:31:37,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:31:38,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:38,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793942508] [2021-10-16 02:31:38,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793942508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:38,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944536286] [2021-10-16 02:31:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:38,246 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:38,247 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:38,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-16 02:31:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:40,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:40,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:31:40,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:31:41,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [944536286] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:41,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344504251] [2021-10-16 02:31:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:41,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:31:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:41,665 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:31:41,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-16 02:31:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:43,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:43,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:31:44,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:31:45,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344504251] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:45,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:31:45,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:31:45,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401041275] [2021-10-16 02:31:45,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:45,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:45,099 INFO L87 Difference]: Start difference. First operand 2735 states and 3756 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2021-10-16 02:31:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:45,432 INFO L93 Difference]: Finished difference Result 8171 states and 11178 transitions. [2021-10-16 02:31:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:31:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 373 [2021-10-16 02:31:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:45,443 INFO L225 Difference]: With dead ends: 8171 [2021-10-16 02:31:45,443 INFO L226 Difference]: Without dead ends: 5444 [2021-10-16 02:31:45,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2234 GetRequests, 2231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2021-10-16 02:31:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 3683. [2021-10-16 02:31:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3683 states, 3682 states have (on average 1.4063009234111896) internal successors, (5178), 3682 states have internal predecessors, (5178), 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) [2021-10-16 02:31:45,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5178 transitions. [2021-10-16 02:31:45,564 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5178 transitions. Word has length 373 [2021-10-16 02:31:45,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:45,565 INFO L470 AbstractCegarLoop]: Abstraction has 3683 states and 5178 transitions. [2021-10-16 02:31:45,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2021-10-16 02:31:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5178 transitions. [2021-10-16 02:31:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-10-16 02:31:45,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:45,574 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:45,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:45,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-16 02:31:45,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:46,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:46,181 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:46,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1455211118, now seen corresponding path program 1 times [2021-10-16 02:31:46,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:46,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032457851] [2021-10-16 02:31:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:46,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:46,183 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:46,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 02:31:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:47,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:47,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 02:31:48,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 02:31:49,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:49,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032457851] [2021-10-16 02:31:49,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032457851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:49,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:49,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:49,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733628156] [2021-10-16 02:31:49,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:49,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:49,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:49,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:49,302 INFO L87 Difference]: Start difference. First operand 3683 states and 5178 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-10-16 02:31:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:49,508 INFO L93 Difference]: Finished difference Result 7616 states and 10784 transitions. [2021-10-16 02:31:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:49,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 403 [2021-10-16 02:31:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:49,514 INFO L225 Difference]: With dead ends: 7616 [2021-10-16 02:31:49,514 INFO L226 Difference]: Without dead ends: 3941 [2021-10-16 02:31:49,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-10-16 02:31:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3803. [2021-10-16 02:31:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 1.4013677012098895) internal successors, (5328), 3802 states have internal predecessors, (5328), 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) [2021-10-16 02:31:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 5328 transitions. [2021-10-16 02:31:49,663 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 5328 transitions. Word has length 403 [2021-10-16 02:31:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:49,664 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 5328 transitions. [2021-10-16 02:31:49,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-10-16 02:31:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 5328 transitions. [2021-10-16 02:31:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-10-16 02:31:49,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:49,674 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:49,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:49,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:49,890 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:49,890 INFO L82 PathProgramCache]: Analyzing trace with hash 564489533, now seen corresponding path program 1 times [2021-10-16 02:31:49,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:49,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355898500] [2021-10-16 02:31:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:49,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:49,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:49,892 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:49,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:31:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:51,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 02:31:52,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 02:31:53,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:53,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355898500] [2021-10-16 02:31:53,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355898500] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:53,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:53,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:53,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505006113] [2021-10-16 02:31:53,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:53,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:53,202 INFO L87 Difference]: Start difference. First operand 3803 states and 5328 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-10-16 02:31:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:53,436 INFO L93 Difference]: Finished difference Result 8030 states and 11424 transitions. [2021-10-16 02:31:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 404 [2021-10-16 02:31:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:53,446 INFO L225 Difference]: With dead ends: 8030 [2021-10-16 02:31:53,446 INFO L226 Difference]: Without dead ends: 4235 [2021-10-16 02:31:53,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4235 states. [2021-10-16 02:31:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4235 to 4211. [2021-10-16 02:31:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.3767220902612827) internal successors, (5796), 4210 states have internal predecessors, (5796), 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) [2021-10-16 02:31:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 5796 transitions. [2021-10-16 02:31:53,564 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 5796 transitions. Word has length 404 [2021-10-16 02:31:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:53,564 INFO L470 AbstractCegarLoop]: Abstraction has 4211 states and 5796 transitions. [2021-10-16 02:31:53,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-10-16 02:31:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 5796 transitions. [2021-10-16 02:31:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-10-16 02:31:53,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:53,575 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:53,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:53,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:53,794 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:53,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1942156107, now seen corresponding path program 1 times [2021-10-16 02:31:53,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:53,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560258562] [2021-10-16 02:31:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:53,795 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:53,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:53,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:53,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:31:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:55,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:55,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 02:31:56,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 02:31:57,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:57,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560258562] [2021-10-16 02:31:57,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560258562] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:57,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:57,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:57,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769969019] [2021-10-16 02:31:57,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:57,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:57,288 INFO L87 Difference]: Start difference. First operand 4211 states and 5796 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-10-16 02:31:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:57,526 INFO L93 Difference]: Finished difference Result 8870 states and 12408 transitions. [2021-10-16 02:31:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:57,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 435 [2021-10-16 02:31:57,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:57,536 INFO L225 Difference]: With dead ends: 8870 [2021-10-16 02:31:57,537 INFO L226 Difference]: Without dead ends: 4667 [2021-10-16 02:31:57,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2021-10-16 02:31:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4643. [2021-10-16 02:31:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 4642 states have (on average 1.3545885394226627) internal successors, (6288), 4642 states have internal predecessors, (6288), 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) [2021-10-16 02:31:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6288 transitions. [2021-10-16 02:31:57,663 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6288 transitions. Word has length 435 [2021-10-16 02:31:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:57,663 INFO L470 AbstractCegarLoop]: Abstraction has 4643 states and 6288 transitions. [2021-10-16 02:31:57,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-10-16 02:31:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6288 transitions. [2021-10-16 02:31:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-10-16 02:31:57,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:57,673 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:57,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:57,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:57,892 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 575825762, now seen corresponding path program 1 times [2021-10-16 02:31:57,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:57,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239788186] [2021-10-16 02:31:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:57,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:57,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:57,894 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:57,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 02:32:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:00,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:32:00,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1351 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-16 02:32:01,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1351 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-16 02:32:01,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:01,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239788186] [2021-10-16 02:32:01,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239788186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:01,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:01,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:01,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101561102] [2021-10-16 02:32:01,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:01,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:01,859 INFO L87 Difference]: Start difference. First operand 4643 states and 6288 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-10-16 02:32:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:02,068 INFO L93 Difference]: Finished difference Result 8472 states and 11290 transitions. [2021-10-16 02:32:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:02,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 468 [2021-10-16 02:32:02,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:02,077 INFO L225 Difference]: With dead ends: 8472 [2021-10-16 02:32:02,077 INFO L226 Difference]: Without dead ends: 3837 [2021-10-16 02:32:02,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 933 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2021-10-16 02:32:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3361. [2021-10-16 02:32:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3361 states, 3360 states have (on average 1.249404761904762) internal successors, (4198), 3360 states have internal predecessors, (4198), 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) [2021-10-16 02:32:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 4198 transitions. [2021-10-16 02:32:02,175 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 4198 transitions. Word has length 468 [2021-10-16 02:32:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:02,176 INFO L470 AbstractCegarLoop]: Abstraction has 3361 states and 4198 transitions. [2021-10-16 02:32:02,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-10-16 02:32:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 4198 transitions. [2021-10-16 02:32:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-10-16 02:32:02,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:02,185 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:02,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:02,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:02,405 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:32:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash 978835537, now seen corresponding path program 1 times [2021-10-16 02:32:02,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:02,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525860123] [2021-10-16 02:32:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:02,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:02,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:02,407 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:02,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-16 02:32:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:04,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:32:05,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:32:06,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:06,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525860123] [2021-10-16 02:32:06,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525860123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:06,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456774821] [2021-10-16 02:32:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:06,528 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:06,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:32:06,529 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:32:06,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-16 02:32:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:10,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:10,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:32:11,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:32:12,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [456774821] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:12,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109308387] [2021-10-16 02:32:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:12,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:32:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:12,321 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:32:12,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-16 02:32:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:15,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:15,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:32:16,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:32:17,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109308387] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:17,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:32:17,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:32:17,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481710073] [2021-10-16 02:32:17,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:17,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:17,519 INFO L87 Difference]: Start difference. First operand 3361 states and 4198 transitions. Second operand has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 6 states have internal predecessors, (278), 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) [2021-10-16 02:32:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:17,957 INFO L93 Difference]: Finished difference Result 6018 states and 7482 transitions. [2021-10-16 02:32:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:32:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 6 states have internal predecessors, (278), 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 506 [2021-10-16 02:32:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:17,959 INFO L225 Difference]: With dead ends: 6018 [2021-10-16 02:32:17,959 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:32:17,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3036 GetRequests, 3029 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:32:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:32:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:32:17,964 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) [2021-10-16 02:32:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:32:17,965 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 506 [2021-10-16 02:32:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:17,965 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:32:17,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 6 states have internal predecessors, (278), 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) [2021-10-16 02:32:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:32:17,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:32:17,968 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:32:17,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:18,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:18,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:18,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:32:18,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:32:18,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:18,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:19,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:20,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:22,636 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 417) no Hoare annotation was computed. [2021-10-16 02:32:22,636 INFO L853 garLoopResultBuilder]: At program point L201(lines 197 561) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))))) [2021-10-16 02:32:22,637 INFO L853 garLoopResultBuilder]: At program point L168(lines 164 572) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,637 INFO L853 garLoopResultBuilder]: At program point L135(lines 134 582) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:32:22,637 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2021-10-16 02:32:22,637 INFO L860 garLoopResultBuilder]: At program point L631(lines 622 633) the Hoare annotation is: true [2021-10-16 02:32:22,637 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 406) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L599(lines 599 603) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 559) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 570) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 581) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 272) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L237(lines 237 248) no Hoare annotation was computed. [2021-10-16 02:32:22,638 INFO L857 garLoopResultBuilder]: For program point L237-2(lines 219 552) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L502(lines 502 505) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L304-2(lines 304 308) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L437-1(lines 437 445) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 558) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 569) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 580) no Hoare annotation was computed. [2021-10-16 02:32:22,639 INFO L853 garLoopResultBuilder]: At program point L207(lines 203 559) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,639 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 570) the Hoare annotation is: (let ((.cse1 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2) (and .cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not .cse0) .cse2))) [2021-10-16 02:32:22,639 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 443) no Hoare annotation was computed. [2021-10-16 02:32:22,640 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 379) no Hoare annotation was computed. [2021-10-16 02:32:22,640 INFO L857 garLoopResultBuilder]: For program point L209(lines 209 557) no Hoare annotation was computed. [2021-10-16 02:32:22,640 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 568) no Hoare annotation was computed. [2021-10-16 02:32:22,640 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 579) no Hoare annotation was computed. [2021-10-16 02:32:22,640 INFO L853 garLoopResultBuilder]: At program point L110-2(lines 110 608) the Hoare annotation is: (let ((.cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse3 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) (or (and .cse0 .cse1 (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and .cse2 .cse0 .cse1 .cse3) (and .cse0 .cse1 .cse4 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 .cse1 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4) (and .cse0 .cse1 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse2 .cse0 .cse1 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse4) (and .cse0 .cse1 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 .cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse3) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse4 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)))) [2021-10-16 02:32:22,640 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 546) no Hoare annotation was computed. [2021-10-16 02:32:22,641 INFO L857 garLoopResultBuilder]: For program point L507(lines 507 509) no Hoare annotation was computed. [2021-10-16 02:32:22,641 INFO L857 garLoopResultBuilder]: For program point L540-1(lines 540 546) no Hoare annotation was computed. [2021-10-16 02:32:22,641 INFO L857 garLoopResultBuilder]: For program point L507-2(lines 219 552) no Hoare annotation was computed. [2021-10-16 02:32:22,641 INFO L853 garLoopResultBuilder]: At program point L408(lines 399 417) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,641 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-16 02:32:22,641 INFO L853 garLoopResultBuilder]: At program point L177(lines 176 568) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse1) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1))) [2021-10-16 02:32:22,642 INFO L853 garLoopResultBuilder]: At program point L144(lines 137 581) the Hoare annotation is: (let ((.cse1 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2) (and .cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not .cse0) .cse2))) [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 378) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L344-1(lines 344 378) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 556) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 567) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 578) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 589) no Hoare annotation was computed. [2021-10-16 02:32:22,642 INFO L860 garLoopResultBuilder]: At program point L609(lines 109 610) the Hoare annotation is: true [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L543(lines 543 545) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 479) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L411(lines 411 413) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 375) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L853 garLoopResultBuilder]: At program point L213(lines 209 557) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1))) [2021-10-16 02:32:22,643 INFO L853 garLoopResultBuilder]: At program point L114(lines 113 589) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 555) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 566) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 577) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 588) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 322) no Hoare annotation was computed. [2021-10-16 02:32:22,643 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 315 322) no Hoare annotation was computed. [2021-10-16 02:32:22,644 INFO L860 garLoopResultBuilder]: At program point L216(lines 215 555) the Hoare annotation is: true [2021-10-16 02:32:22,644 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 567) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,644 INFO L853 garLoopResultBuilder]: At program point L150(lines 146 578) the Hoare annotation is: (let ((.cse1 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2) (and .cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not .cse0) .cse2))) [2021-10-16 02:32:22,644 INFO L857 garLoopResultBuilder]: For program point L614(lines 614 616) no Hoare annotation was computed. [2021-10-16 02:32:22,644 INFO L857 garLoopResultBuilder]: For program point L614-2(lines 614 616) no Hoare annotation was computed. [2021-10-16 02:32:22,644 INFO L857 garLoopResultBuilder]: For program point L515(lines 515 518) no Hoare annotation was computed. [2021-10-16 02:32:22,645 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 373) no Hoare annotation was computed. [2021-10-16 02:32:22,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:32:22,645 INFO L860 garLoopResultBuilder]: At program point L218(lines 217 555) the Hoare annotation is: true [2021-10-16 02:32:22,645 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 565) no Hoare annotation was computed. [2021-10-16 02:32:22,645 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 576) no Hoare annotation was computed. [2021-10-16 02:32:22,645 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 587) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 287) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L285-2(lines 219 552) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 453) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 321) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L353(lines 353 357) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L353-2(lines 353 357) no Hoare annotation was computed. [2021-10-16 02:32:22,646 INFO L857 garLoopResultBuilder]: For program point L254(lines 254 264) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 564) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 575) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 586) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L486(lines 486 488) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L486-2(lines 219 552) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 419) no Hoare annotation was computed. [2021-10-16 02:32:22,647 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 258) no Hoare annotation was computed. [2021-10-16 02:32:22,648 INFO L853 garLoopResultBuilder]: At program point L222(lines 116 588) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:32:22,648 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 565) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,648 INFO L853 garLoopResultBuilder]: At program point L156(lines 152 576) the Hoare annotation is: (let ((.cse1 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2) (and .cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not .cse0) .cse2))) [2021-10-16 02:32:22,648 INFO L860 garLoopResultBuilder]: At program point L619(lines 22 621) the Hoare annotation is: true [2021-10-16 02:32:22,649 INFO L853 garLoopResultBuilder]: At program point L553(lines 110 608) the Hoare annotation is: (let ((.cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse3 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) (or (and .cse0 .cse1 (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and .cse2 .cse0 .cse1 .cse3) (and .cse0 .cse1 .cse4 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 .cse1 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4) (and .cse0 .cse1 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse2 .cse0 .cse1 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse4) (and .cse0 .cse1 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 .cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse3) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse4 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and .cse0 (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)))) [2021-10-16 02:32:22,649 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 463) no Hoare annotation was computed. [2021-10-16 02:32:22,649 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-10-16 02:32:22,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:32:22,649 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 563) no Hoare annotation was computed. [2021-10-16 02:32:22,649 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 574) no Hoare annotation was computed. [2021-10-16 02:32:22,650 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 585) no Hoare annotation was computed. [2021-10-16 02:32:22,650 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:32:22,650 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 525) no Hoare annotation was computed. [2021-10-16 02:32:22,650 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:32:22,650 INFO L857 garLoopResultBuilder]: For program point L590(lines 590 606) no Hoare annotation was computed. [2021-10-16 02:32:22,650 INFO L853 garLoopResultBuilder]: At program point L524(lines 83 620) the Hoare annotation is: false [2021-10-16 02:32:22,650 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2021-10-16 02:32:22,651 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:32:22,651 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 562) no Hoare annotation was computed. [2021-10-16 02:32:22,651 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 573) no Hoare annotation was computed. [2021-10-16 02:32:22,651 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:32:22,651 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 584) no Hoare annotation was computed. [2021-10-16 02:32:22,651 INFO L857 garLoopResultBuilder]: For program point L591(lines 591 605) no Hoare annotation was computed. [2021-10-16 02:32:22,652 INFO L857 garLoopResultBuilder]: For program point L492(lines 492 496) no Hoare annotation was computed. [2021-10-16 02:32:22,652 INFO L857 garLoopResultBuilder]: For program point L492-2(lines 492 496) no Hoare annotation was computed. [2021-10-16 02:32:22,652 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 563) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,652 INFO L853 garLoopResultBuilder]: At program point L162(lines 158 574) the Hoare annotation is: (let ((.cse1 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2) (and .cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not .cse0) .cse2))) [2021-10-16 02:32:22,652 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2021-10-16 02:32:22,652 INFO L857 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:32:22,653 INFO L857 garLoopResultBuilder]: For program point L592(lines 592 597) no Hoare annotation was computed. [2021-10-16 02:32:22,653 INFO L857 garLoopResultBuilder]: For program point L526(lines 526 528) no Hoare annotation was computed. [2021-10-16 02:32:22,653 INFO L857 garLoopResultBuilder]: For program point L592-2(lines 591 605) no Hoare annotation was computed. [2021-10-16 02:32:22,653 INFO L857 garLoopResultBuilder]: For program point L361(lines 361 369) no Hoare annotation was computed. [2021-10-16 02:32:22,653 INFO L853 garLoopResultBuilder]: At program point L362(lines 338 380) the Hoare annotation is: (let ((.cse1 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2) (and .cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not .cse0) .cse2))) [2021-10-16 02:32:22,653 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 561) no Hoare annotation was computed. [2021-10-16 02:32:22,654 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 572) no Hoare annotation was computed. [2021-10-16 02:32:22,654 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 583) no Hoare annotation was computed. [2021-10-16 02:32:22,654 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:32:22,654 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 618) no Hoare annotation was computed. [2021-10-16 02:32:22,654 INFO L857 garLoopResultBuilder]: For program point L594(lines 594 596) no Hoare annotation was computed. [2021-10-16 02:32:22,654 INFO L857 garLoopResultBuilder]: For program point L429(lines 429 431) no Hoare annotation was computed. [2021-10-16 02:32:22,655 INFO L853 garLoopResultBuilder]: At program point L396(lines 387 419) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse2) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse2))) [2021-10-16 02:32:22,655 INFO L853 garLoopResultBuilder]: At program point L132(lines 128 584) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:32:22,655 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 366) no Hoare annotation was computed. [2021-10-16 02:32:22,655 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 300) no Hoare annotation was computed. [2021-10-16 02:32:22,655 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L298-2(lines 219 552) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L530(lines 530 534) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L530-2(lines 530 534) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 336) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L332-2(lines 219 552) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 560) no Hoare annotation was computed. [2021-10-16 02:32:22,656 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 571) no Hoare annotation was computed. [2021-10-16 02:32:22,657 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 582) no Hoare annotation was computed. [2021-10-16 02:32:22,657 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-10-16 02:32:22,657 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 83 620) no Hoare annotation was computed. [2021-10-16 02:32:22,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:32:22,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:32:22 BoogieIcfgContainer [2021-10-16 02:32:22,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:32:22,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:32:22,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:32:22,708 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:32:22,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:03" (3/4) ... [2021-10-16 02:32:22,712 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:32:22,729 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:32:22,730 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:32:22,731 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:32:22,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:32:22,828 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:32:22,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:32:22,830 INFO L168 Benchmark]: Toolchain (without parser) took 80990.94 ms. Allocated memory was 77.6 MB in the beginning and 522.2 MB in the end (delta: 444.6 MB). Free memory was 41.9 MB in the beginning and 343.9 MB in the end (delta: -302.0 MB). Peak memory consumption was 369.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,831 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:32:22,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.98 ms. Allocated memory is still 77.6 MB. Free memory was 41.7 MB in the beginning and 48.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.82 ms. Allocated memory is still 77.6 MB. Free memory was 48.0 MB in the beginning and 45.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,832 INFO L168 Benchmark]: Boogie Preprocessor took 80.56 ms. Allocated memory is still 77.6 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,833 INFO L168 Benchmark]: RCFGBuilder took 753.01 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 43.8 MB in the end (delta: -556.9 kB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,833 INFO L168 Benchmark]: TraceAbstraction took 79392.27 ms. Allocated memory was 77.6 MB in the beginning and 522.2 MB in the end (delta: 444.6 MB). Free memory was 43.1 MB in the beginning and 124.9 MB in the end (delta: -81.8 MB). Peak memory consumption was 383.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,834 INFO L168 Benchmark]: Witness Printer took 121.42 ms. Allocated memory is still 522.2 MB. Free memory was 124.9 MB in the beginning and 343.9 MB in the end (delta: -219.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:22,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 531.98 ms. Allocated memory is still 77.6 MB. Free memory was 41.7 MB in the beginning and 48.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.82 ms. Allocated memory is still 77.6 MB. Free memory was 48.0 MB in the beginning and 45.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.56 ms. Allocated memory is still 77.6 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 753.01 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 43.8 MB in the end (delta: -556.9 kB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 79392.27 ms. Allocated memory was 77.6 MB in the beginning and 522.2 MB in the end (delta: 444.6 MB). Free memory was 43.1 MB in the beginning and 124.9 MB in the end (delta: -81.8 MB). Peak memory consumption was 383.7 MB. Max. memory is 16.1 GB. * Witness Printer took 121.42 ms. Allocated memory is still 522.2 MB. Free memory was 124.9 MB in the beginning and 343.9 MB in the end (delta: -219.0 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: 618]: 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, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 79277.6ms, OverallIterations: 21, TraceHistogramMax: 16, EmptinessCheckTime: 159.0ms, AutomataDifference: 5008.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4056.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4671 SDtfs, 3164 SDslu, 4377 SDs, 0 SdLazy, 2532 SolverSat, 537 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2269.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14386 GetRequests, 14343 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 169.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4706occurred in iteration=12, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1883.2ms AutomataMinimizationTime, 21 MinimizatonAttempts, 6967 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 481 NumberOfFragments, 1062 HoareAnnotationTreeSize, 28 FomulaSimplifications, 44927 FormulaSimplificationTreeSizeReduction, 1789.7ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 4664 FormulaSimplificationTreeSizeReductionInter, 2251.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 439.6ms SsaConstructionTime, 1969.8ms SatisfiabilityAnalysisTime, 29818.0ms InterpolantComputationTime, 7213 NumberOfCodeBlocks, 7213 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 14372 ConstructedInterpolants, 0 QuantifiedInterpolants, 20820 SizeOfPredicates, 13 NumberOfNonLiveVariables, 8590 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 54 InterpolantComputations, 38 PerfectInterpolantSequences, 50082/50498 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(8640bv32 == s__state) - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 399]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: ((((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: (((((((((((((((((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8512bv32 == s__state) || (!(4bv32 == blastFlag) && !(s__hit == 0bv32))) || 3bv32 == s__state) || ((8496bv32 == s__state && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag))) || (((8576bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && 8448bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 8608bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8640bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8560bv32 == s__state)) || (((8576bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && 8576bv32 == s__state)) || ((8672bv32 == s__state && !(4bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8544bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8466bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((3bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && 8448bv32 == s__state)) || ((8464bv32 == s__state && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag))) || (((8656bv32 == s__state && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32))) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 8592bv32 == s__state)) || (((!(4bv32 == blastFlag) && 8528bv32 == s__state) && !(3bv32 == blastFlag)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((((((((((((((((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8512bv32 == s__state) || (!(4bv32 == blastFlag) && !(s__hit == 0bv32))) || 3bv32 == s__state) || ((8496bv32 == s__state && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag))) || (((8576bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && 8448bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 8608bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8640bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8560bv32 == s__state)) || (((8576bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && 8576bv32 == s__state)) || ((8672bv32 == s__state && !(4bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8544bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && 8466bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((3bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && 8448bv32 == s__state)) || (((8656bv32 == s__state && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32))) || (((!(4bv32 == blastFlag) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 8592bv32 == s__state)) || (((!(4bv32 == blastFlag) && 8528bv32 == s__state) && !(3bv32 == blastFlag)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: ((((8576bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && 8448bv32 == s__state) || ((!(4bv32 == blastFlag) && 8448bv32 == s__state) && !(s__hit == 0bv32))) || ((3bv32 == s__s3__tmp__next_state___0 && !(4bv32 == blastFlag)) && 8448bv32 == s__state) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: ((((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: ((!(4bv32 == blastFlag) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(4bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 338]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) - InvariantResult [Line: 83]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: ((((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(s__s3__tmp__next_state___0 == 8640bv32)) - InvariantResult [Line: 158]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(3bv32 == blastFlag)) && !(8640bv32 == s__state)) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:32:22,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a254288-59e5-4c20-9d45-4d2cf9923f1f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...