./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0237d7665f4c4183d0858d7577c1caaad788a36b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0237d7665f4c4183d0858d7577c1caaad788a36b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:21,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:21,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:21,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:21,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:21,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:21,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:21,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:21,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:21,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:21,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:21,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:21,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:21,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:21,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:21,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:21,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:21,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:21,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:21,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:21,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:21,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:21,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:21,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:21,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:21,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:21,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:21,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:21,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:21,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:21,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:21,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:21,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:21,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:21,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:21,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:21,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:21,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:21,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:21,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:21,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:21,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:23:21,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:21,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:21,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:21,882 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:21,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:21,883 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:21,883 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:23:21,883 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:21,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:21,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:23:21,885 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:23:21,885 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:21,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:23:21,886 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:23:21,886 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:23:21,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:21,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:21,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:23:21,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:21,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:21,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:21,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:21,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:21,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:21,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:21,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:21,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:21,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:21,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:21,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:21,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:21,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:21,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:21,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:21,893 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:23:21,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:23:21,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:21,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:21,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:21,894 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0237d7665f4c4183d0858d7577c1caaad788a36b [2021-10-13 07:23:22,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:22,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:22,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:22,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:22,201 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:22,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2021-10-13 07:23:22,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/34fd84130/446a31b40785458ab309746893ef56e6/FLAGc2ec1500a [2021-10-13 07:23:22,779 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:22,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2021-10-13 07:23:22,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/34fd84130/446a31b40785458ab309746893ef56e6/FLAGc2ec1500a [2021-10-13 07:23:23,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/34fd84130/446a31b40785458ab309746893ef56e6 [2021-10-13 07:23:23,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:23,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:23,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:23,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:23,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:23,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89646d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23, skipping insertion in model container [2021-10-13 07:23:23,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:23,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:23,552 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[34967,34980] [2021-10-13 07:23:23,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:23,579 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:23,653 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[34967,34980] [2021-10-13 07:23:23,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:23,674 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:23,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23 WrapperNode [2021-10-13 07:23:23,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:23,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:23,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:23,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:23,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:23,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:23,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:23,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:23,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:23,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:23,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:23,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:23,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (1/1) ... [2021-10-13 07:23:23,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:23,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:23,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:23,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:23:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:24,074 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:23:24,541 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 07:23:24,542 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 07:23:25,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:25,003 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:23:25,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:25 BoogieIcfgContainer [2021-10-13 07:23:25,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:25,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:25,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:25,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:25,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:23" (1/3) ... [2021-10-13 07:23:25,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2458e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:25, skipping insertion in model container [2021-10-13 07:23:25,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:23" (2/3) ... [2021-10-13 07:23:25,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2458e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:25, skipping insertion in model container [2021-10-13 07:23:25,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:25" (3/3) ... [2021-10-13 07:23:25,015 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-1.c [2021-10-13 07:23:25,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:25,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:23:25,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:25,094 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:25,094 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:23:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:23:25,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:25,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:25,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 137007864, now seen corresponding path program 1 times [2021-10-13 07:23:25,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:25,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464641811] [2021-10-13 07:23:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:25,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:25,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:25,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464641811] [2021-10-13 07:23:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464641811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:25,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:25,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:23:25,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161212078] [2021-10-13 07:23:25,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:25,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:25,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:25,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:25,382 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 0 states have call successors, (0), 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 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:25,566 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2021-10-13 07:23:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 07:23:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:25,582 INFO L225 Difference]: With dead ends: 169 [2021-10-13 07:23:25,582 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 07:23:25,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 07:23:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-13 07:23:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 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) [2021-10-13 07:23:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2021-10-13 07:23:25,633 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2021-10-13 07:23:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:25,633 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2021-10-13 07:23:25,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2021-10-13 07:23:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:23:25,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:25,636 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:25,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:23:25,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:25,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1000463209, now seen corresponding path program 1 times [2021-10-13 07:23:25,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:25,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874103989] [2021-10-13 07:23:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:25,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:25,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:25,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874103989] [2021-10-13 07:23:25,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874103989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:25,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:25,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:25,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226423510] [2021-10-13 07:23:25,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:25,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:25,737 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:25,839 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2021-10-13 07:23:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:25,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 07:23:25,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:25,841 INFO L225 Difference]: With dead ends: 178 [2021-10-13 07:23:25,842 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 07:23:25,843 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 [2021-10-13 07:23:25,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 07:23:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-10-13 07:23:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.431578947368421) internal successors, (136), 95 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2021-10-13 07:23:25,852 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2021-10-13 07:23:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:25,853 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2021-10-13 07:23:25,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2021-10-13 07:23:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:23:25,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:25,855 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:25,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:23:25,856 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:25,856 INFO L82 PathProgramCache]: Analyzing trace with hash -99200315, now seen corresponding path program 1 times [2021-10-13 07:23:25,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:25,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435561958] [2021-10-13 07:23:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:25,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:23:25,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:25,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435561958] [2021-10-13 07:23:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435561958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:25,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:25,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:25,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610037856] [2021-10-13 07:23:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:25,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:25,921 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:26,057 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-10-13 07:23:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2021-10-13 07:23:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:26,063 INFO L225 Difference]: With dead ends: 206 [2021-10-13 07:23:26,063 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 07:23:26,066 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 [2021-10-13 07:23:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 07:23:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-10-13 07:23:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4) internal successors, (154), 110 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2021-10-13 07:23:26,080 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2021-10-13 07:23:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:26,080 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2021-10-13 07:23:26,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2021-10-13 07:23:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 07:23:26,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:26,083 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:26,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:23:26,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:26,084 INFO L82 PathProgramCache]: Analyzing trace with hash 416969212, now seen corresponding path program 1 times [2021-10-13 07:23:26,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:26,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932212156] [2021-10-13 07:23:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:26,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:23:26,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:26,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932212156] [2021-10-13 07:23:26,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932212156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:26,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292905696] [2021-10-13 07:23:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:26,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:26,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:26,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:26,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:23:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:26,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:23:26,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:23:26,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:23:26,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292905696] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:26,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:23:26,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-13 07:23:26,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076211147] [2021-10-13 07:23:26,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:23:26,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:26,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:23:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:23:26,811 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2021-10-13 07:23:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:27,128 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2021-10-13 07:23:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:23:27,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 52 [2021-10-13 07:23:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:27,132 INFO L225 Difference]: With dead ends: 312 [2021-10-13 07:23:27,133 INFO L226 Difference]: Without dead ends: 203 [2021-10-13 07:23:27,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:23:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-13 07:23:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2021-10-13 07:23:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 185 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 255 transitions. [2021-10-13 07:23:27,160 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 255 transitions. Word has length 52 [2021-10-13 07:23:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:27,161 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 255 transitions. [2021-10-13 07:23:27,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2021-10-13 07:23:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 255 transitions. [2021-10-13 07:23:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 07:23:27,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:27,164 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:23:27,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:27,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:27,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:27,394 INFO L82 PathProgramCache]: Analyzing trace with hash 827671789, now seen corresponding path program 1 times [2021-10-13 07:23:27,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:27,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052676658] [2021-10-13 07:23:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:27,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:23:27,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:27,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052676658] [2021-10-13 07:23:27,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052676658] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:27,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:27,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:27,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686348060] [2021-10-13 07:23:27,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:27,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:27,476 INFO L87 Difference]: Start difference. First operand 186 states and 255 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:27,574 INFO L93 Difference]: Finished difference Result 390 states and 543 transitions. [2021-10-13 07:23:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:27,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 67 [2021-10-13 07:23:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:27,579 INFO L225 Difference]: With dead ends: 390 [2021-10-13 07:23:27,579 INFO L226 Difference]: Without dead ends: 207 [2021-10-13 07:23:27,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-13 07:23:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-10-13 07:23:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.357843137254902) internal successors, (277), 204 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2021-10-13 07:23:27,592 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 67 [2021-10-13 07:23:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:27,592 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2021-10-13 07:23:27,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2021-10-13 07:23:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 07:23:27,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:27,596 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-13 07:23:27,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:23:27,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash -87315437, now seen corresponding path program 1 times [2021-10-13 07:23:27,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:27,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105427495] [2021-10-13 07:23:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:27,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:23:27,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:27,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105427495] [2021-10-13 07:23:27,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105427495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:27,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051009143] [2021-10-13 07:23:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:27,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:27,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:27,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:27,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:23:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:27,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:23:27,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-13 07:23:28,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-13 07:23:28,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051009143] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:28,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:23:28,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 6 [2021-10-13 07:23:28,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971406174] [2021-10-13 07:23:28,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:28,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:28,408 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:28,431 INFO L93 Difference]: Finished difference Result 406 states and 550 transitions. [2021-10-13 07:23:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 85 [2021-10-13 07:23:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:28,434 INFO L225 Difference]: With dead ends: 406 [2021-10-13 07:23:28,435 INFO L226 Difference]: Without dead ends: 404 [2021-10-13 07:23:28,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-13 07:23:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2021-10-13 07:23:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.3606965174129353) internal successors, (547), 402 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 547 transitions. [2021-10-13 07:23:28,448 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 547 transitions. Word has length 85 [2021-10-13 07:23:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:28,449 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 547 transitions. [2021-10-13 07:23:28,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 547 transitions. [2021-10-13 07:23:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 07:23:28,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:28,452 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2021-10-13 07:23:28,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:28,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:28,669 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash 784620765, now seen corresponding path program 1 times [2021-10-13 07:23:28,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:28,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207058165] [2021-10-13 07:23:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:28,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-13 07:23:28,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:28,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207058165] [2021-10-13 07:23:28,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207058165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:28,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:28,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:28,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681371158] [2021-10-13 07:23:28,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:28,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:28,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:28,743 INFO L87 Difference]: Start difference. First operand 403 states and 547 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:28,872 INFO L93 Difference]: Finished difference Result 853 states and 1175 transitions. [2021-10-13 07:23:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:28,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 107 [2021-10-13 07:23:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:28,877 INFO L225 Difference]: With dead ends: 853 [2021-10-13 07:23:28,877 INFO L226 Difference]: Without dead ends: 453 [2021-10-13 07:23:28,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-10-13 07:23:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2021-10-13 07:23:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.34009009009009) internal successors, (595), 444 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 595 transitions. [2021-10-13 07:23:28,896 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 595 transitions. Word has length 107 [2021-10-13 07:23:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:28,898 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 595 transitions. [2021-10-13 07:23:28,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 595 transitions. [2021-10-13 07:23:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 07:23:28,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:28,905 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:28,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:23:28,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1497010352, now seen corresponding path program 1 times [2021-10-13 07:23:28,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:28,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380570330] [2021-10-13 07:23:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:28,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:23:28,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:28,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380570330] [2021-10-13 07:23:28,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380570330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:28,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693896979] [2021-10-13 07:23:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:28,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:28,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:29,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:23:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:29,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:23:29,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:23:29,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:23:30,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693896979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:23:30,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121468780] [2021-10-13 07:23:30,041 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2021-10-13 07:23:30,041 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:23:30,050 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:23:30,055 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:23:30,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:23:30,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,341 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:23:30,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:23:30,347 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:23:30,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:23:30,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-13 07:23:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,514 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:23:30,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:23:30,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:23:30,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:23:30,528 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:30,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,609 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:23:30,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:23:30,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:23:30,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:23:30,616 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:30,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:30,688 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:23:30,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:23:30,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:23:30,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:23:30,694 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:30,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:23:30,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:30,903 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-13 07:23:30,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1062 [2021-10-13 07:23:30,930 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:23:30,931 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1128, output treesize:1062 [2021-10-13 07:23:30,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:31,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:31,157 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_21| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:23:31,161 INFO L168 Benchmark]: Toolchain (without parser) took 7925.45 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 85.2 MB in the beginning and 62.0 MB in the end (delta: 23.3 MB). Peak memory consumption was 79.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:31,161 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 61.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:23:31,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.51 ms. Allocated memory is still 121.6 MB. Free memory was 85.1 MB in the beginning and 92.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:31,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.91 ms. Allocated memory is still 121.6 MB. Free memory was 92.9 MB in the beginning and 90.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:31,162 INFO L168 Benchmark]: Boogie Preprocessor took 69.96 ms. Allocated memory is still 121.6 MB. Free memory was 90.2 MB in the beginning and 88.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:31,163 INFO L168 Benchmark]: RCFGBuilder took 1174.62 ms. Allocated memory is still 121.6 MB. Free memory was 88.1 MB in the beginning and 91.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 57.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:31,163 INFO L168 Benchmark]: TraceAbstraction took 6151.76 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 90.7 MB in the beginning and 62.0 MB in the end (delta: 28.7 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:31,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 61.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 438.51 ms. Allocated memory is still 121.6 MB. Free memory was 85.1 MB in the beginning and 92.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.91 ms. Allocated memory is still 121.6 MB. Free memory was 92.9 MB in the beginning and 90.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.96 ms. Allocated memory is still 121.6 MB. Free memory was 90.2 MB in the beginning and 88.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1174.62 ms. Allocated memory is still 121.6 MB. Free memory was 88.1 MB in the beginning and 91.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 57.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6151.76 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 90.7 MB in the beginning and 62.0 MB in the end (delta: 28.7 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_21|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:23:31,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:33,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:33,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:33,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:33,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:33,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:33,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:33,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:33,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:33,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:33,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:33,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:33,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:33,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:33,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:33,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:33,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:33,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:33,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:33,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:33,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:33,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:33,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:33,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:33,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:33,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:33,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:33,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:33,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:33,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:33,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:33,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:33,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:33,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:33,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:33,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:33,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:33,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:33,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:33,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:33,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:33,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:23:33,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:33,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:33,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:33,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:33,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:33,827 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:33,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:33,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:33,827 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:33,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:33,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:33,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:33,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:33,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:33,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:33,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:33,831 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:33,831 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:23:33,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:23:33,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:33,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:33,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:33,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:33,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:33,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:23:33,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:33,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:33,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:33,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:33,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:33,834 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:23:33,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:33,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:33,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:33,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:33,836 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0237d7665f4c4183d0858d7577c1caaad788a36b [2021-10-13 07:23:34,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:34,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:34,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:34,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:34,257 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:34,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2021-10-13 07:23:34,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/582e93dd5/34924b8f7820459d9d5486ead9909c4c/FLAG7985629ab [2021-10-13 07:23:34,909 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:34,910 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2021-10-13 07:23:34,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/582e93dd5/34924b8f7820459d9d5486ead9909c4c/FLAG7985629ab [2021-10-13 07:23:35,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/data/582e93dd5/34924b8f7820459d9d5486ead9909c4c [2021-10-13 07:23:35,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:35,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:35,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:35,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:35,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:35,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec622d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35, skipping insertion in model container [2021-10-13 07:23:35,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:35,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:35,666 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[34967,34980] [2021-10-13 07:23:35,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:35,695 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:35,784 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_d78b715a-a658-4ece-bb7a-6a5b100b4443/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[34967,34980] [2021-10-13 07:23:35,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:35,816 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:35,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35 WrapperNode [2021-10-13 07:23:35,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:35,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:35,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:35,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:35,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:35,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:35,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:35,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:35,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:35,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:35,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:35,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:35,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:35,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (1/1) ... [2021-10-13 07:23:36,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:36,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:36,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:23:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:36,303 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:23:36,867 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 07:23:36,867 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 07:23:36,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:36,898 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:23:36,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:36 BoogieIcfgContainer [2021-10-13 07:23:36,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:36,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:36,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:36,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:36,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:35" (1/3) ... [2021-10-13 07:23:36,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21915c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:36, skipping insertion in model container [2021-10-13 07:23:36,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:35" (2/3) ... [2021-10-13 07:23:36,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21915c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:36, skipping insertion in model container [2021-10-13 07:23:36,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:36" (3/3) ... [2021-10-13 07:23:36,909 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-1.c [2021-10-13 07:23:36,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:36,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:23:37,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:37,026 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:37,027 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:23:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 125 states have (on average 1.72) internal successors, (215), 126 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:23:37,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:37,059 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] [2021-10-13 07:23:37,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:37,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1457700990, now seen corresponding path program 1 times [2021-10-13 07:23:37,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:37,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332367909] [2021-10-13 07:23:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:37,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:37,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:37,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:37,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:23:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:23:37,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:37,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:37,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:37,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332367909] [2021-10-13 07:23:37,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332367909] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:37,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:37,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570588233] [2021-10-13 07:23:37,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:37,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:37,514 INFO L87 Difference]: Start difference. First operand has 127 states, 125 states have (on average 1.72) internal successors, (215), 126 states have internal predecessors, (215), 0 states have call successors, (0), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:37,721 INFO L93 Difference]: Finished difference Result 250 states and 425 transitions. [2021-10-13 07:23:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:37,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-13 07:23:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:37,743 INFO L225 Difference]: With dead ends: 250 [2021-10-13 07:23:37,743 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 07:23:37,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 07:23:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-13 07:23:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 113 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) [2021-10-13 07:23:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 171 transitions. [2021-10-13 07:23:37,818 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 171 transitions. Word has length 24 [2021-10-13 07:23:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:37,818 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 171 transitions. [2021-10-13 07:23:37,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 171 transitions. [2021-10-13 07:23:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:23:37,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:37,824 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:37,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:38,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:38,037 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:38,043 INFO L82 PathProgramCache]: Analyzing trace with hash 561711387, now seen corresponding path program 1 times [2021-10-13 07:23:38,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:38,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962676739] [2021-10-13 07:23:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:38,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:38,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:38,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:23:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:38,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:38,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:38,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:38,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962676739] [2021-10-13 07:23:38,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962676739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:38,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:38,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:38,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559425146] [2021-10-13 07:23:38,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:38,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:38,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:38,395 INFO L87 Difference]: Start difference. First operand 114 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:38,550 INFO L93 Difference]: Finished difference Result 236 states and 358 transitions. [2021-10-13 07:23:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-13 07:23:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:38,556 INFO L225 Difference]: With dead ends: 236 [2021-10-13 07:23:38,557 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 07:23:38,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 07:23:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2021-10-13 07:23:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4921875) internal successors, (191), 128 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 191 transitions. [2021-10-13 07:23:38,587 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 191 transitions. Word has length 37 [2021-10-13 07:23:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:38,588 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 191 transitions. [2021-10-13 07:23:38,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 191 transitions. [2021-10-13 07:23:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:23:38,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:38,594 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:38,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:38,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:38,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash 356447844, now seen corresponding path program 1 times [2021-10-13 07:23:38,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:38,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651150321] [2021-10-13 07:23:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:38,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:38,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:38,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:38,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:23:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:38,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:38,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:23:39,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:23:39,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:39,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651150321] [2021-10-13 07:23:39,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651150321] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:39,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:39,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:39,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064801140] [2021-10-13 07:23:39,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:39,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:39,208 INFO L87 Difference]: Start difference. First operand 129 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:39,337 INFO L93 Difference]: Finished difference Result 269 states and 404 transitions. [2021-10-13 07:23:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:39,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 51 [2021-10-13 07:23:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:39,339 INFO L225 Difference]: With dead ends: 269 [2021-10-13 07:23:39,339 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 07:23:39,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 07:23:39,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2021-10-13 07:23:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4689655172413794) internal successors, (213), 145 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 213 transitions. [2021-10-13 07:23:39,349 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 213 transitions. Word has length 51 [2021-10-13 07:23:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 213 transitions. [2021-10-13 07:23:39,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 213 transitions. [2021-10-13 07:23:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:23:39,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:39,352 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:39,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:39,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:39,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1231511209, now seen corresponding path program 1 times [2021-10-13 07:23:39,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:39,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417528323] [2021-10-13 07:23:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:39,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:39,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:39,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:39,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:23:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:39,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:39,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:23:39,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:23:40,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:40,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417528323] [2021-10-13 07:23:40,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417528323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:40,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:40,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:40,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63049953] [2021-10-13 07:23:40,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:40,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:40,108 INFO L87 Difference]: Start difference. First operand 146 states and 213 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2021-10-13 07:23:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:40,369 INFO L93 Difference]: Finished difference Result 353 states and 538 transitions. [2021-10-13 07:23:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:40,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 68 [2021-10-13 07:23:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:40,372 INFO L225 Difference]: With dead ends: 353 [2021-10-13 07:23:40,373 INFO L226 Difference]: Without dead ends: 217 [2021-10-13 07:23:40,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-13 07:23:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 209. [2021-10-13 07:23:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4375) internal successors, (299), 208 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 299 transitions. [2021-10-13 07:23:40,385 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 299 transitions. Word has length 68 [2021-10-13 07:23:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:40,386 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 299 transitions. [2021-10-13 07:23:40,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2021-10-13 07:23:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 299 transitions. [2021-10-13 07:23:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 07:23:40,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:40,388 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:40,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:40,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:40,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash 339337440, now seen corresponding path program 1 times [2021-10-13 07:23:40,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:40,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990289670] [2021-10-13 07:23:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:40,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:40,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:40,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:40,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:23:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:40,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:40,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:23:40,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:23:41,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:41,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990289670] [2021-10-13 07:23:41,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990289670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:41,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:41,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:41,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697537103] [2021-10-13 07:23:41,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:41,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:41,129 INFO L87 Difference]: Start difference. First operand 209 states and 299 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:41,288 INFO L93 Difference]: Finished difference Result 431 states and 624 transitions. [2021-10-13 07:23:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 07:23:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:41,292 INFO L225 Difference]: With dead ends: 431 [2021-10-13 07:23:41,292 INFO L226 Difference]: Without dead ends: 232 [2021-10-13 07:23:41,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-13 07:23:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2021-10-13 07:23:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.422907488986784) internal successors, (323), 227 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 323 transitions. [2021-10-13 07:23:41,303 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 323 transitions. Word has length 69 [2021-10-13 07:23:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:41,304 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 323 transitions. [2021-10-13 07:23:41,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 323 transitions. [2021-10-13 07:23:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 07:23:41,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:41,306 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:23:41,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:41,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:41,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2099447754, now seen corresponding path program 1 times [2021-10-13 07:23:41,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:41,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204569146] [2021-10-13 07:23:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:41,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:41,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:41,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:23:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:41,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:41,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:23:41,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:23:42,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:42,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204569146] [2021-10-13 07:23:42,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204569146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:42,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:42,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:42,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119585832] [2021-10-13 07:23:42,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:42,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:42,171 INFO L87 Difference]: Start difference. First operand 228 states and 323 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:42,329 INFO L93 Difference]: Finished difference Result 470 states and 674 transitions. [2021-10-13 07:23:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 85 [2021-10-13 07:23:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:42,333 INFO L225 Difference]: With dead ends: 470 [2021-10-13 07:23:42,333 INFO L226 Difference]: Without dead ends: 252 [2021-10-13 07:23:42,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-13 07:23:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2021-10-13 07:23:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.407258064516129) internal successors, (349), 248 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 349 transitions. [2021-10-13 07:23:42,350 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 349 transitions. Word has length 85 [2021-10-13 07:23:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:42,350 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 349 transitions. [2021-10-13 07:23:42,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 349 transitions. [2021-10-13 07:23:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 07:23:42,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:42,353 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-13 07:23:42,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:42,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:42,565 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1810291289, now seen corresponding path program 1 times [2021-10-13 07:23:42,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:42,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91706178] [2021-10-13 07:23:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:42,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:42,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:42,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:42,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:23:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:42,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:42,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:23:43,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:23:43,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:43,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91706178] [2021-10-13 07:23:43,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91706178] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:43,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:43,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:43,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265098921] [2021-10-13 07:23:43,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:43,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:43,318 INFO L87 Difference]: Start difference. First operand 249 states and 349 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2021-10-13 07:23:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:43,370 INFO L93 Difference]: Finished difference Result 749 states and 1048 transitions. [2021-10-13 07:23:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:43,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 104 [2021-10-13 07:23:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:43,375 INFO L225 Difference]: With dead ends: 749 [2021-10-13 07:23:43,376 INFO L226 Difference]: Without dead ends: 510 [2021-10-13 07:23:43,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-13 07:23:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2021-10-13 07:23:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.387033398821218) internal successors, (706), 509 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 706 transitions. [2021-10-13 07:23:43,398 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 706 transitions. Word has length 104 [2021-10-13 07:23:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:43,398 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 706 transitions. [2021-10-13 07:23:43,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2021-10-13 07:23:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 706 transitions. [2021-10-13 07:23:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 07:23:43,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:43,401 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-13 07:23:43,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:43,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:43,614 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:43,614 INFO L82 PathProgramCache]: Analyzing trace with hash 17269863, now seen corresponding path program 1 times [2021-10-13 07:23:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:43,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524573958] [2021-10-13 07:23:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:43,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:43,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:43,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:23:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:43,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 07:23:44,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 07:23:44,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:44,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524573958] [2021-10-13 07:23:44,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524573958] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:44,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:44,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984363189] [2021-10-13 07:23:44,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:44,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:44,388 INFO L87 Difference]: Start difference. First operand 510 states and 706 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:44,426 INFO L93 Difference]: Finished difference Result 1031 states and 1426 transitions. [2021-10-13 07:23:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:44,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 104 [2021-10-13 07:23:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:44,431 INFO L225 Difference]: With dead ends: 1031 [2021-10-13 07:23:44,431 INFO L226 Difference]: Without dead ends: 531 [2021-10-13 07:23:44,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:44,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-10-13 07:23:44,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2021-10-13 07:23:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3830188679245283) internal successors, (733), 530 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 733 transitions. [2021-10-13 07:23:44,454 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 733 transitions. Word has length 104 [2021-10-13 07:23:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:44,454 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 733 transitions. [2021-10-13 07:23:44,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 733 transitions. [2021-10-13 07:23:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 07:23:44,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:44,457 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-13 07:23:44,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:44,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:44,670 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:44,671 INFO L82 PathProgramCache]: Analyzing trace with hash 44335465, now seen corresponding path program 1 times [2021-10-13 07:23:44,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:44,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166922490] [2021-10-13 07:23:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:44,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:44,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:44,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:44,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:23:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:44,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:44,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:23:45,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:23:45,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:45,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166922490] [2021-10-13 07:23:45,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166922490] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:45,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:45,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:45,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886160970] [2021-10-13 07:23:45,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:45,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:45,495 INFO L87 Difference]: Start difference. First operand 531 states and 733 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:45,530 INFO L93 Difference]: Finished difference Result 1079 states and 1487 transitions. [2021-10-13 07:23:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 104 [2021-10-13 07:23:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:45,534 INFO L225 Difference]: With dead ends: 1079 [2021-10-13 07:23:45,535 INFO L226 Difference]: Without dead ends: 558 [2021-10-13 07:23:45,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-13 07:23:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-10-13 07:23:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 1.377019748653501) internal successors, (767), 557 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 767 transitions. [2021-10-13 07:23:45,561 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 767 transitions. Word has length 104 [2021-10-13 07:23:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:45,562 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 767 transitions. [2021-10-13 07:23:45,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 767 transitions. [2021-10-13 07:23:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 07:23:45,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:45,564 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-13 07:23:45,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:45,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:45,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:45,781 INFO L82 PathProgramCache]: Analyzing trace with hash -492994255, now seen corresponding path program 1 times [2021-10-13 07:23:45,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:45,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961397207] [2021-10-13 07:23:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:45,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:45,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:45,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:45,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:23:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:46,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:46,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:23:46,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:23:46,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:46,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961397207] [2021-10-13 07:23:46,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961397207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:46,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:46,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:46,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920500906] [2021-10-13 07:23:46,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:46,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:46,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:46,643 INFO L87 Difference]: Start difference. First operand 558 states and 767 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:46,722 INFO L93 Difference]: Finished difference Result 1549 states and 2147 transitions. [2021-10-13 07:23:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 106 [2021-10-13 07:23:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:46,729 INFO L225 Difference]: With dead ends: 1549 [2021-10-13 07:23:46,730 INFO L226 Difference]: Without dead ends: 1028 [2021-10-13 07:23:46,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-10-13 07:23:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2021-10-13 07:23:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 1.3846153846153846) internal successors, (1422), 1027 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1422 transitions. [2021-10-13 07:23:46,770 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1422 transitions. Word has length 106 [2021-10-13 07:23:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:46,770 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 1422 transitions. [2021-10-13 07:23:46,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1422 transitions. [2021-10-13 07:23:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-13 07:23:46,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:46,777 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2021-10-13 07:23:46,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:46,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:46,990 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:46,991 INFO L82 PathProgramCache]: Analyzing trace with hash -813688608, now seen corresponding path program 1 times [2021-10-13 07:23:46,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:46,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15214698] [2021-10-13 07:23:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:46,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:46,993 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:46,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:23:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:47,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:47,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:23:47,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:23:47,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:47,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15214698] [2021-10-13 07:23:47,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15214698] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:47,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:47,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:47,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380270883] [2021-10-13 07:23:47,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:47,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:47,965 INFO L87 Difference]: Start difference. First operand 1028 states and 1422 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) [2021-10-13 07:23:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:48,108 INFO L93 Difference]: Finished difference Result 2124 states and 2977 transitions. [2021-10-13 07:23:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:48,108 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 132 [2021-10-13 07:23:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:48,116 INFO L225 Difference]: With dead ends: 2124 [2021-10-13 07:23:48,116 INFO L226 Difference]: Without dead ends: 1133 [2021-10-13 07:23:48,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-10-13 07:23:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1120. [2021-10-13 07:23:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.3708668453976764) internal successors, (1534), 1119 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1534 transitions. [2021-10-13 07:23:48,167 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1534 transitions. Word has length 132 [2021-10-13 07:23:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:48,167 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1534 transitions. [2021-10-13 07:23:48,168 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) [2021-10-13 07:23:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1534 transitions. [2021-10-13 07:23:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-13 07:23:48,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:48,172 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-10-13 07:23:48,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:48,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:48,385 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:48,386 INFO L82 PathProgramCache]: Analyzing trace with hash 595510742, now seen corresponding path program 1 times [2021-10-13 07:23:48,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:48,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899511739] [2021-10-13 07:23:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:48,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:48,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:48,387 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:48,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:23:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:48,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:48,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-10-13 07:23:49,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-10-13 07:23:49,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:49,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899511739] [2021-10-13 07:23:49,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899511739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:49,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:49,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:49,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665676339] [2021-10-13 07:23:49,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:49,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:49,481 INFO L87 Difference]: Start difference. First operand 1120 states and 1534 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:49,750 INFO L93 Difference]: Finished difference Result 2312 states and 3199 transitions. [2021-10-13 07:23:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 153 [2021-10-13 07:23:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:49,760 INFO L225 Difference]: With dead ends: 2312 [2021-10-13 07:23:49,760 INFO L226 Difference]: Without dead ends: 1229 [2021-10-13 07:23:49,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-10-13 07:23:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2021-10-13 07:23:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.3562551781275891) internal successors, (1637), 1207 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1637 transitions. [2021-10-13 07:23:49,807 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1637 transitions. Word has length 153 [2021-10-13 07:23:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:49,808 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1637 transitions. [2021-10-13 07:23:49,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1637 transitions. [2021-10-13 07:23:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-13 07:23:49,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:49,813 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2021-10-13 07:23:49,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:50,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:50,026 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:50,027 INFO L82 PathProgramCache]: Analyzing trace with hash 487894875, now seen corresponding path program 1 times [2021-10-13 07:23:50,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:50,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421265832] [2021-10-13 07:23:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:50,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:50,029 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:50,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:23:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:50,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:50,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-10-13 07:23:50,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-10-13 07:23:51,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:51,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421265832] [2021-10-13 07:23:51,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421265832] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:51,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:51,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:51,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384729075] [2021-10-13 07:23:51,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:51,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:51,235 INFO L87 Difference]: Start difference. First operand 1208 states and 1637 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:51,507 INFO L93 Difference]: Finished difference Result 2527 states and 3478 transitions. [2021-10-13 07:23:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 172 [2021-10-13 07:23:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:51,515 INFO L225 Difference]: With dead ends: 2527 [2021-10-13 07:23:51,515 INFO L226 Difference]: Without dead ends: 1356 [2021-10-13 07:23:51,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-10-13 07:23:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1332. [2021-10-13 07:23:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1331 states have (on average 1.3350864012021038) internal successors, (1777), 1331 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1777 transitions. [2021-10-13 07:23:51,571 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1777 transitions. Word has length 172 [2021-10-13 07:23:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:51,571 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 1777 transitions. [2021-10-13 07:23:51,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1777 transitions. [2021-10-13 07:23:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-10-13 07:23:51,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:51,577 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 4, 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] [2021-10-13 07:23:51,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:51,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:51,791 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1459962228, now seen corresponding path program 1 times [2021-10-13 07:23:51,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:51,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390834876] [2021-10-13 07:23:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:51,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:51,797 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:51,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:23:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:52,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:52,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-13 07:23:52,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-13 07:23:53,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:53,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390834876] [2021-10-13 07:23:53,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390834876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:53,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:53,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:53,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485089105] [2021-10-13 07:23:53,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:53,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:53,341 INFO L87 Difference]: Start difference. First operand 1332 states and 1777 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:53,434 INFO L93 Difference]: Finished difference Result 5127 states and 6859 transitions. [2021-10-13 07:23:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:53,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 203 [2021-10-13 07:23:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:53,457 INFO L225 Difference]: With dead ends: 5127 [2021-10-13 07:23:53,458 INFO L226 Difference]: Without dead ends: 3832 [2021-10-13 07:23:53,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2021-10-13 07:23:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3828. [2021-10-13 07:23:53,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 1.3370786516853932) internal successors, (5117), 3827 states have internal predecessors, (5117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5117 transitions. [2021-10-13 07:23:53,616 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5117 transitions. Word has length 203 [2021-10-13 07:23:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:53,617 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 5117 transitions. [2021-10-13 07:23:53,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5117 transitions. [2021-10-13 07:23:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-10-13 07:23:53,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:53,627 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 4, 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] [2021-10-13 07:23:53,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:53,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:53,853 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:53,853 INFO L82 PathProgramCache]: Analyzing trace with hash 785617226, now seen corresponding path program 1 times [2021-10-13 07:23:53,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:53,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097186723] [2021-10-13 07:23:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:53,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:53,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:53,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:23:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:54,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-10-13 07:23:55,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-10-13 07:23:55,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:55,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097186723] [2021-10-13 07:23:55,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097186723] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:55,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:55,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:55,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545625932] [2021-10-13 07:23:55,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:55,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:55,516 INFO L87 Difference]: Start difference. First operand 3828 states and 5117 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:55,889 INFO L93 Difference]: Finished difference Result 8111 states and 11014 transitions. [2021-10-13 07:23:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 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 203 [2021-10-13 07:23:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:55,915 INFO L225 Difference]: With dead ends: 8111 [2021-10-13 07:23:55,916 INFO L226 Difference]: Without dead ends: 4320 [2021-10-13 07:23:55,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2021-10-13 07:23:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 4260. [2021-10-13 07:23:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.314158253111059) internal successors, (5597), 4259 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5597 transitions. [2021-10-13 07:23:56,096 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5597 transitions. Word has length 203 [2021-10-13 07:23:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:56,097 INFO L470 AbstractCegarLoop]: Abstraction has 4260 states and 5597 transitions. [2021-10-13 07:23:56,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5597 transitions. [2021-10-13 07:23:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-10-13 07:23:56,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:56,108 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 7, 7, 5, 5, 3, 3, 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] [2021-10-13 07:23:56,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:56,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:56,322 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:56,323 INFO L82 PathProgramCache]: Analyzing trace with hash -977613831, now seen corresponding path program 1 times [2021-10-13 07:23:56,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:56,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900731950] [2021-10-13 07:23:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:56,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:56,326 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:56,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:23:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:57,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:57,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2021-10-13 07:23:57,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2021-10-13 07:23:58,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:58,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900731950] [2021-10-13 07:23:58,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900731950] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:58,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:58,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:58,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122716888] [2021-10-13 07:23:58,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:58,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:58,151 INFO L87 Difference]: Start difference. First operand 4260 states and 5597 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:58,482 INFO L93 Difference]: Finished difference Result 8690 states and 11471 transitions. [2021-10-13 07:23:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:58,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 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 242 [2021-10-13 07:23:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:58,508 INFO L225 Difference]: With dead ends: 8690 [2021-10-13 07:23:58,508 INFO L226 Difference]: Without dead ends: 4467 [2021-10-13 07:23:58,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2021-10-13 07:23:58,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4392. [2021-10-13 07:23:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 1.3065360965611479) internal successors, (5737), 4391 states have internal predecessors, (5737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 5737 transitions. [2021-10-13 07:23:58,686 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 5737 transitions. Word has length 242 [2021-10-13 07:23:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:58,687 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 5737 transitions. [2021-10-13 07:23:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 5737 transitions. [2021-10-13 07:23:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-10-13 07:23:58,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:58,700 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 7, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:58,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:58,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:58,913 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:58,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1677778899, now seen corresponding path program 1 times [2021-10-13 07:23:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:58,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723230309] [2021-10-13 07:23:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:58,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:58,915 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:58,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:23:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:59,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-10-13 07:24:00,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-10-13 07:24:00,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:00,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723230309] [2021-10-13 07:24:00,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723230309] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:00,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:00,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:24:00,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224121187] [2021-10-13 07:24:00,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:00,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:00,747 INFO L87 Difference]: Start difference. First operand 4392 states and 5737 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:01,125 INFO L93 Difference]: Finished difference Result 9266 states and 12299 transitions. [2021-10-13 07:24:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:24:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 254 [2021-10-13 07:24:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:01,154 INFO L225 Difference]: With dead ends: 9266 [2021-10-13 07:24:01,154 INFO L226 Difference]: Without dead ends: 4911 [2021-10-13 07:24:01,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2021-10-13 07:24:01,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4836. [2021-10-13 07:24:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4836 states, 4835 states have (on average 1.2883143743536711) internal successors, (6229), 4835 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 6229 transitions. [2021-10-13 07:24:01,357 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 6229 transitions. Word has length 254 [2021-10-13 07:24:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:01,358 INFO L470 AbstractCegarLoop]: Abstraction has 4836 states and 6229 transitions. [2021-10-13 07:24:01,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 6229 transitions. [2021-10-13 07:24:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-10-13 07:24:01,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:01,373 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:01,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:01,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:01,587 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1277617296, now seen corresponding path program 1 times [2021-10-13 07:24:01,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:01,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362907419] [2021-10-13 07:24:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:01,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:01,590 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:01,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:24:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:02,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:24:03,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:24:03,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:03,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362907419] [2021-10-13 07:24:03,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362907419] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:03,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2073036997] [2021-10-13 07:24:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:03,752 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:03,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:03,753 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:03,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-13 07:24:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:05,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:05,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:24:05,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:24:06,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2073036997] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:06,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562642466] [2021-10-13 07:24:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:06,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:06,436 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:06,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 07:24:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:07,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:07,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:24:08,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:24:09,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562642466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:09,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:24:09,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:24:09,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123944230] [2021-10-13 07:24:09,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:24:09,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:24:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:24:09,073 INFO L87 Difference]: Start difference. First operand 4836 states and 6229 transitions. Second operand has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:09,890 INFO L93 Difference]: Finished difference Result 16865 states and 21705 transitions. [2021-10-13 07:24:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:24:09,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 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 292 [2021-10-13 07:24:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:09,927 INFO L225 Difference]: With dead ends: 16865 [2021-10-13 07:24:09,927 INFO L226 Difference]: Without dead ends: 12066 [2021-10-13 07:24:09,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1754 GetRequests, 1746 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:24:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12066 states. [2021-10-13 07:24:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12066 to 8307. [2021-10-13 07:24:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 8306 states have (on average 1.3032747411509753) internal successors, (10825), 8306 states have internal predecessors, (10825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 10825 transitions. [2021-10-13 07:24:10,243 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 10825 transitions. Word has length 292 [2021-10-13 07:24:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:10,243 INFO L470 AbstractCegarLoop]: Abstraction has 8307 states and 10825 transitions. [2021-10-13 07:24:10,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 10825 transitions. [2021-10-13 07:24:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-10-13 07:24:10,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:10,264 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:10,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:10,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:10,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:10,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:10,889 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1870451095, now seen corresponding path program 1 times [2021-10-13 07:24:10,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:10,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227202755] [2021-10-13 07:24:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:10,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:10,891 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:10,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:24:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:12,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:12,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-10-13 07:24:12,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-10-13 07:24:13,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:13,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227202755] [2021-10-13 07:24:13,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227202755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:13,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:13,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:13,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004019495] [2021-10-13 07:24:13,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:13,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:13,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:13,618 INFO L87 Difference]: Start difference. First operand 8307 states and 10825 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:13,863 INFO L93 Difference]: Finished difference Result 20542 states and 26803 transitions. [2021-10-13 07:24:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:13,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 294 [2021-10-13 07:24:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:13,895 INFO L225 Difference]: With dead ends: 20542 [2021-10-13 07:24:13,896 INFO L226 Difference]: Without dead ends: 12272 [2021-10-13 07:24:13,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12272 states. [2021-10-13 07:24:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12272 to 12270. [2021-10-13 07:24:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12270 states, 12269 states have (on average 1.300758007987611) internal successors, (15959), 12269 states have internal predecessors, (15959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12270 states to 12270 states and 15959 transitions. [2021-10-13 07:24:14,317 INFO L78 Accepts]: Start accepts. Automaton has 12270 states and 15959 transitions. Word has length 294 [2021-10-13 07:24:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:14,318 INFO L470 AbstractCegarLoop]: Abstraction has 12270 states and 15959 transitions. [2021-10-13 07:24:14,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 12270 states and 15959 transitions. [2021-10-13 07:24:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-10-13 07:24:14,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:14,349 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:24:14,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:14,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:14,566 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:14,567 INFO L82 PathProgramCache]: Analyzing trace with hash 683922952, now seen corresponding path program 1 times [2021-10-13 07:24:14,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:14,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793870122] [2021-10-13 07:24:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:14,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:14,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:14,568 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:14,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:24:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:16,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:16,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:24:16,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:24:17,093 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:17,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793870122] [2021-10-13 07:24:17,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793870122] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:17,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:17,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:24:17,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474235551] [2021-10-13 07:24:17,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:17,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:17,095 INFO L87 Difference]: Start difference. First operand 12270 states and 15959 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:17,461 INFO L93 Difference]: Finished difference Result 25589 states and 33694 transitions. [2021-10-13 07:24:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:24:17,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 306 [2021-10-13 07:24:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:17,490 INFO L225 Difference]: With dead ends: 25589 [2021-10-13 07:24:17,490 INFO L226 Difference]: Without dead ends: 13422 [2021-10-13 07:24:17,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13422 states. [2021-10-13 07:24:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13422 to 13242. [2021-10-13 07:24:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13242 states, 13241 states have (on average 1.2847972207537195) internal successors, (17012), 13241 states have internal predecessors, (17012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13242 states to 13242 states and 17012 transitions. [2021-10-13 07:24:17,949 INFO L78 Accepts]: Start accepts. Automaton has 13242 states and 17012 transitions. Word has length 306 [2021-10-13 07:24:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:17,950 INFO L470 AbstractCegarLoop]: Abstraction has 13242 states and 17012 transitions. [2021-10-13 07:24:17,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 13242 states and 17012 transitions. [2021-10-13 07:24:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-10-13 07:24:17,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:17,980 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:18,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:18,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:18,197 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1039154638, now seen corresponding path program 1 times [2021-10-13 07:24:18,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:18,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457789468] [2021-10-13 07:24:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:18,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:18,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:18,200 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:18,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:24:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:19,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:19,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-10-13 07:24:20,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-10-13 07:24:21,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:21,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457789468] [2021-10-13 07:24:21,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457789468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:21,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:21,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:24:21,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120088245] [2021-10-13 07:24:21,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:21,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:21,146 INFO L87 Difference]: Start difference. First operand 13242 states and 17012 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:21,476 INFO L93 Difference]: Finished difference Result 25514 states and 33196 transitions. [2021-10-13 07:24:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:24:21,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 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 384 [2021-10-13 07:24:21,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:21,486 INFO L225 Difference]: With dead ends: 25514 [2021-10-13 07:24:21,487 INFO L226 Difference]: Without dead ends: 5328 [2021-10-13 07:24:21,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-10-13 07:24:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5066. [2021-10-13 07:24:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5066 states, 5065 states have (on average 1.2552813425468905) internal successors, (6358), 5065 states have internal predecessors, (6358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5066 states to 5066 states and 6358 transitions. [2021-10-13 07:24:21,629 INFO L78 Accepts]: Start accepts. Automaton has 5066 states and 6358 transitions. Word has length 384 [2021-10-13 07:24:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:21,630 INFO L470 AbstractCegarLoop]: Abstraction has 5066 states and 6358 transitions. [2021-10-13 07:24:21,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5066 states and 6358 transitions. [2021-10-13 07:24:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-10-13 07:24:21,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:21,640 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:21,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:21,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:21,857 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:21,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1076313372, now seen corresponding path program 1 times [2021-10-13 07:24:21,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:21,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615414329] [2021-10-13 07:24:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:21,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:21,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:21,859 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:21,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:24:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:23,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:23,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 1287 proven. 14 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:24:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 1287 proven. 14 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:24:25,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:25,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615414329] [2021-10-13 07:24:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615414329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:25,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [449030705] [2021-10-13 07:24:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:25,230 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:25,231 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:25,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-13 07:24:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:27,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:27,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 1287 proven. 14 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:24:28,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 1287 proven. 14 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:24:29,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [449030705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:29,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034829466] [2021-10-13 07:24:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:29,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:29,704 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:29,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 07:24:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:32,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 1287 proven. 14 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:24:33,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 1287 proven. 14 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:24:33,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034829466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:33,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:24:33,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:24:33,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088988176] [2021-10-13 07:24:33,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:24:33,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:24:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:24:33,885 INFO L87 Difference]: Start difference. First operand 5066 states and 6358 transitions. Second operand has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:34,105 INFO L93 Difference]: Finished difference Result 5301 states and 6656 transitions. [2021-10-13 07:24:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:24:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 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 443 [2021-10-13 07:24:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:34,106 INFO L225 Difference]: With dead ends: 5301 [2021-10-13 07:24:34,106 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:24:34,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2656 GetRequests, 2650 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:24:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:24:34,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:24:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:24:34,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 443 [2021-10-13 07:24:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:34,109 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:24:34,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:24:34,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:24:34,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:24:34,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:34,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:34,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-13 07:24:34,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:34,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:24:34,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:35,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:36,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:36,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:38,813 INFO L853 garLoopResultBuilder]: At program point L168(lines 164 494) the Hoare annotation is: (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)))) [2021-10-13 07:24:38,813 INFO L853 garLoopResultBuilder]: At program point L102(lines 101 515) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (or (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0))) [2021-10-13 07:24:38,813 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-10-13 07:24:38,813 INFO L857 garLoopResultBuilder]: For program point L367(lines 367 369) no Hoare annotation was computed. [2021-10-13 07:24:38,813 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 492) no Hoare annotation was computed. [2021-10-13 07:24:38,813 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 503) no Hoare annotation was computed. [2021-10-13 07:24:38,813 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 514) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L468-2(lines 468 470) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L853 garLoopResultBuilder]: At program point L138(lines 134 504) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) .cse6 .cse7) (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2021-10-13 07:24:38,814 INFO L860 garLoopResultBuilder]: At program point L535(lines 97 536) the Hoare annotation is: true [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 275) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L238(lines 238 241) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L271-2(lines 271 275) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L305(lines 305 308) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L853 garLoopResultBuilder]: At program point L206(lines 104 514) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32))))) (or (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse4 .cse5 .cse6 .cse7))) [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 491) no Hoare annotation was computed. [2021-10-13 07:24:38,814 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 502) no Hoare annotation was computed. [2021-10-13 07:24:38,815 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 513) no Hoare annotation was computed. [2021-10-13 07:24:38,815 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 492) the Hoare annotation is: (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)))) [2021-10-13 07:24:38,815 INFO L857 garLoopResultBuilder]: For program point L473(lines 473 475) no Hoare annotation was computed. [2021-10-13 07:24:38,815 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 451) no Hoare annotation was computed. [2021-10-13 07:24:38,815 INFO L857 garLoopResultBuilder]: For program point L407(lines 407 421) no Hoare annotation was computed. [2021-10-13 07:24:38,815 INFO L857 garLoopResultBuilder]: For program point L407-1(lines 407 421) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L857 garLoopResultBuilder]: For program point L440-2(lines 440 451) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 490) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 501) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 512) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 542) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L857 garLoopResultBuilder]: For program point L540-2(lines 540 542) no Hoare annotation was computed. [2021-10-13 07:24:38,816 INFO L853 garLoopResultBuilder]: At program point L144(lines 140 502) the Hoare annotation is: (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)))) [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 345) no Hoare annotation was computed. [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L211(lines 211 213) no Hoare annotation was computed. [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L211-2(lines 211 213) no Hoare annotation was computed. [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 379) no Hoare annotation was computed. [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 489) no Hoare annotation was computed. [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 500) no Hoare annotation was computed. [2021-10-13 07:24:38,817 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 511) no Hoare annotation was computed. [2021-10-13 07:24:38,818 INFO L857 garLoopResultBuilder]: For program point L411(lines 411 417) no Hoare annotation was computed. [2021-10-13 07:24:38,818 INFO L853 garLoopResultBuilder]: At program point L180(lines 176 490) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32))))) (or (and (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2021-10-13 07:24:38,818 INFO L857 garLoopResultBuilder]: For program point L445(lines 445 448) no Hoare annotation was computed. [2021-10-13 07:24:38,818 INFO L857 garLoopResultBuilder]: For program point L313(lines 313 315) no Hoare annotation was computed. [2021-10-13 07:24:38,818 INFO L857 garLoopResultBuilder]: For program point L280-1(lines 280 290) no Hoare annotation was computed. [2021-10-13 07:24:38,818 INFO L860 garLoopResultBuilder]: At program point L545(lines 12 547) the Hoare annotation is: true [2021-10-13 07:24:38,818 INFO L853 garLoopResultBuilder]: At program point L314(lines 76 546) the Hoare annotation is: false [2021-10-13 07:24:38,818 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 488) no Hoare annotation was computed. [2021-10-13 07:24:38,818 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 499) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 510) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L216(lines 216 219) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L853 garLoopResultBuilder]: At program point L150(lines 146 500) the Hoare annotation is: (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)))) [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L853 garLoopResultBuilder]: At program point L481(lines 98 534) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse6 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (.cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse7 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4512 32))) (.cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse8 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4528 32))) (.cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)) (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse0 .cse1 (= (_ bv4480 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse4 .cse3) (and .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)) .cse5) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse4 .cse6) (and .cse4 .cse7) (and (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv3 32))) (and .cse0 .cse1 .cse2 .cse6) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4496 32)) .cse1) (and (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (and .cse0 .cse1 .cse5) (and .cse0 .cse1 .cse7) (and .cse0 .cse1 .cse8) (and .cse4 .cse8) (and .cse0 (= (_ bv4464 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse1))) [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L250(lines 250 252) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L250-2(lines 201 480) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L383(lines 383 387) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L383-2(lines 201 480) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2021-10-13 07:24:38,819 INFO L857 garLoopResultBuilder]: For program point L284-2(lines 282 290) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 487) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 498) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 509) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 532) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L853 garLoopResultBuilder]: At program point L186(lines 182 488) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32))))) (or (and (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2021-10-13 07:24:38,820 INFO L853 garLoopResultBuilder]: At program point L120(lines 116 510) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32))))) (or (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse4 .cse5 .cse6 .cse7))) [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L87(lines 87 89) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L87-2(lines 84 90) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L517(lines 517 531) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L352(lines 352 354) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L518(lines 518 523) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L518-2(lines 517 531) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 486) no Hoare annotation was computed. [2021-10-13 07:24:38,820 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 497) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 508) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 233) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L222-2(lines 201 480) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L520(lines 520 522) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 361) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L356-2(lines 356 361) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 227) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 485) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 496) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 507) no Hoare annotation was computed. [2021-10-13 07:24:38,821 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 96) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point L456-1(lines 456 458) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 260) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L853 garLoopResultBuilder]: At program point L192(lines 188 486) the Hoare annotation is: (let ((.cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse3 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse7 .cse8 .cse9) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8 .cse9) (and (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) [2021-10-13 07:24:38,822 INFO L853 garLoopResultBuilder]: At program point L126(lines 122 508) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32))))) (or (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse3 .cse4 .cse5) (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) .cse2 (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse3 .cse4 .cse5))) [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 95) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L860 garLoopResultBuilder]: At program point L556(lines 548 558) the Hoare annotation is: true [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 327) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point L325-2(lines 201 480) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:24:38,822 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 395) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 484) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 495) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 506) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L525(lines 525 529) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 231) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L853 garLoopResultBuilder]: At program point L195(lines 194 484) the Hoare annotation is: (let ((.cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32)))) (or (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0) (and .cse1 .cse2 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse0) (and .cse1 .cse2 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0))) [2021-10-13 07:24:38,823 INFO L853 garLoopResultBuilder]: At program point L162(lines 152 498) the Hoare annotation is: (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)))) [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L427(lines 427 429) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 483) no Hoare annotation was computed. [2021-10-13 07:24:38,823 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 494) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 505) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L98-1(lines 76 546) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 544) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L462(lines 462 464) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L462-2(lines 462 464) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L297(lines 297 299) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L297-2(lines 201 480) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L860 garLoopResultBuilder]: At program point L198(lines 197 483) the Hoare annotation is: true [2021-10-13 07:24:38,824 INFO L853 garLoopResultBuilder]: At program point L132(lines 128 506) the Hoare annotation is: (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4433 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4417 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)))) [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 434) no Hoare annotation was computed. [2021-10-13 07:24:38,824 INFO L857 garLoopResultBuilder]: For program point L430-2(lines 430 434) no Hoare annotation was computed. [2021-10-13 07:24:38,825 INFO L857 garLoopResultBuilder]: For program point L331(lines 331 335) no Hoare annotation was computed. [2021-10-13 07:24:38,825 INFO L857 garLoopResultBuilder]: For program point L265(lines 265 267) no Hoare annotation was computed. [2021-10-13 07:24:38,825 INFO L857 garLoopResultBuilder]: For program point L331-2(lines 331 335) no Hoare annotation was computed. [2021-10-13 07:24:38,825 INFO L857 garLoopResultBuilder]: For program point L265-2(lines 201 480) no Hoare annotation was computed. [2021-10-13 07:24:38,825 INFO L860 garLoopResultBuilder]: At program point L200(lines 199 483) the Hoare annotation is: true [2021-10-13 07:24:38,825 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 493) no Hoare annotation was computed. [2021-10-13 07:24:38,825 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 504) no Hoare annotation was computed. [2021-10-13 07:24:38,826 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 515) no Hoare annotation was computed. [2021-10-13 07:24:38,830 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:24:38,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:24:38 BoogieIcfgContainer [2021-10-13 07:24:38,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:24:38,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:24:38,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:24:38,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:24:38,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:36" (3/4) ... [2021-10-13 07:24:38,892 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:24:38,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:24:38,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:24:38,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:24:38,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:24:39,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:24:39,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:24:39,058 INFO L168 Benchmark]: Toolchain (without parser) took 63770.31 ms. Allocated memory was 60.8 MB in the beginning and 725.6 MB in the end (delta: 664.8 MB). Free memory was 40.4 MB in the beginning and 185.6 MB in the end (delta: -145.3 MB). Peak memory consumption was 520.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,059 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:24:39,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.88 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 39.3 MB in the end (delta: 784.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.77 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 36.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,061 INFO L168 Benchmark]: Boogie Preprocessor took 75.22 ms. Allocated memory is still 60.8 MB. Free memory was 36.5 MB in the beginning and 34.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,061 INFO L168 Benchmark]: RCFGBuilder took 907.86 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 34.4 MB in the beginning and 44.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,062 INFO L168 Benchmark]: TraceAbstraction took 61984.67 ms. Allocated memory was 77.6 MB in the beginning and 725.6 MB in the end (delta: 648.0 MB). Free memory was 43.3 MB in the beginning and 196.1 MB in the end (delta: -152.8 MB). Peak memory consumption was 547.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,062 INFO L168 Benchmark]: Witness Printer took 169.12 ms. Allocated memory is still 725.6 MB. Free memory was 196.1 MB in the beginning and 185.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:39,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 532.88 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 39.3 MB in the end (delta: 784.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.77 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 36.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.22 ms. Allocated memory is still 60.8 MB. Free memory was 36.5 MB in the beginning and 34.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 907.86 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 34.4 MB in the beginning and 44.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 61984.67 ms. Allocated memory was 77.6 MB in the beginning and 725.6 MB in the end (delta: 648.0 MB). Free memory was 43.3 MB in the beginning and 196.1 MB in the end (delta: -152.8 MB). Peak memory consumption was 547.9 MB. Max. memory is 16.1 GB. * Witness Printer took 169.12 ms. Allocated memory is still 725.6 MB. Free memory was 196.1 MB in the beginning and 185.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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: 544]: 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, 127 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61820.6ms, OverallIterations: 22, TraceHistogramMax: 16, EmptinessCheckTime: 186.2ms, AutomataDifference: 5556.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4099.9ms, InitialAbstractionConstructionTime: 18.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3846 SDtfs, 2737 SDslu, 3233 SDs, 0 SdLazy, 3116 SolverSat, 651 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2543.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10560 GetRequests, 10515 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13242occurred in iteration=20, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2358.1ms AutomataMinimizationTime, 22 MinimizatonAttempts, 4497 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 461 NumberOfFragments, 1051 HoareAnnotationTreeSize, 22 FomulaSimplifications, 27220 FormulaSimplificationTreeSizeReduction, 1416.0ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 10581 FormulaSimplificationTreeSizeReductionInter, 2667.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 448.2ms SsaConstructionTime, 1531.3ms SatisfiabilityAnalysisTime, 22112.7ms InterpolantComputationTime, 5300 NumberOfCodeBlocks, 5300 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 10548 ConstructedInterpolants, 0 QuantifiedInterpolants, 14587 SizeOfPredicates, 8 NumberOfNonLiveVariables, 6739 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 52 InterpolantComputations, 40 PerfectInterpolantSequences, 33946/34138 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: 176]: Loop Invariant Derived loop invariant: ((((((((2bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) || (((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: ((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) || (((((((!(4432bv32 == s__state) && !(s__state == 4433bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && 1bv32 == blastFlag) && !(s__state == 4417bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 548]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && s__state == 4352bv32) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__state == 4352bv32) - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: (((((((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32) - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: (((((((((((((((((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4560bv32) || (s__state == 4368bv32 && 0bv32 == blastFlag)) || ((!(3bv32 == blastFlag) && s__hit == 0bv32) && 4480bv32 == s__state)) || (2bv32 == blastFlag && s__state == 4560bv32)) || ((s__hit == 0bv32 && s__state == 4416bv32) && !(5bv32 == blastFlag))) || ((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && s__state == 4352bv32)) || (2bv32 == blastFlag && s__state == 4512bv32)) || ((!(4432bv32 == s__s3__tmp__next_state___0) && !(3bv32 == blastFlag)) && s__state == 3bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32)) || ((!(3bv32 == blastFlag) && s__state == 4496bv32) && s__hit == 0bv32)) || (1bv32 == blastFlag && s__state == 4384bv32)) || ((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || ((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4512bv32)) || ((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4528bv32)) || (2bv32 == blastFlag && s__state == 4528bv32)) || ((!(3bv32 == blastFlag) && 4464bv32 == s__state) && s__hit == 0bv32) - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4416bv32) - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: (((((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) || ((((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32))) || ((((((((2bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((s__state == 12292bv32 && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(5bv32 == blastFlag)) || (0bv32 == blastFlag && s__state == 12292bv32) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: ((((((((!(4432bv32 == s__state) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) || ((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: ((((((((0bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) || ((((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: (((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: ((((((((2bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) || (((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: ((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((((((0bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) || ((((((((((!(3bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4433bv32)) && s__hit == 0bv32) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4417bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) && !(s__state == 4416bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:24:39,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d78b715a-a658-4ece-bb7a-6a5b100b4443/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...