./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.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_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/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_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/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_d79fc51a-5da1-4673-8753-aed89e89610e/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 64fc077d874a336f18c68c9b79d68b4c2009b140 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/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_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/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_d79fc51a-5da1-4673-8753-aed89e89610e/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 64fc077d874a336f18c68c9b79d68b4c2009b140 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:45:41,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:45:41,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:45:41,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:45:41,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:45:41,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:45:41,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:45:41,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:45:41,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:45:41,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:45:41,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:45:41,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:45:41,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:45:41,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:45:41,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:45:41,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:45:41,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:45:41,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:45:41,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:45:41,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:45:41,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:45:41,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:45:41,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:45:41,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:45:41,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:45:41,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:45:41,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:45:41,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:45:41,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:45:41,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:45:41,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:45:41,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:45:41,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:45:41,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:45:41,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:45:41,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:45:41,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:45:41,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:45:41,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:45:41,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:45:41,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:45:41,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:45:41,791 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:45:41,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:45:41,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:45:41,793 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:45:41,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:45:41,794 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:45:41,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:45:41,795 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:45:41,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:45:41,795 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:45:41,797 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:45:41,797 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:45:41,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:45:41,798 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:45:41,798 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:45:41,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:45:41,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:45:41,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:45:41,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:45:41,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:45:41,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:45:41,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:45:41,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:45:41,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:45:41,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:45:41,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:45:41,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:45:41,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:45:41,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:45:41,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:45:41,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:41,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:45:41,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:45:41,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:45:41,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:45:41,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:45:41,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:45:41,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:45:41,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:45:41,809 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_d79fc51a-5da1-4673-8753-aed89e89610e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fc077d874a336f18c68c9b79d68b4c2009b140 [2021-10-13 07:45:42,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:45:42,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:45:42,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:45:42,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:45:42,232 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:45:42,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-13 07:45:42,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/334d31565/3f2bda8b584d48bc872f18f7b34f7e6a/FLAG67c687e1c [2021-10-13 07:45:43,079 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:45:43,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-13 07:45:43,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/334d31565/3f2bda8b584d48bc872f18f7b34f7e6a/FLAG67c687e1c [2021-10-13 07:45:43,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/334d31565/3f2bda8b584d48bc872f18f7b34f7e6a [2021-10-13 07:45:43,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:45:43,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:45:43,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:43,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:45:43,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:45:43,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:43,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23741143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43, skipping insertion in model container [2021-10-13 07:45:43,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:43,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:45:43,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:45:43,782 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_d79fc51a-5da1-4673-8753-aed89e89610e/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[43871,43884] [2021-10-13 07:45:43,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:43,800 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:45:43,895 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_d79fc51a-5da1-4673-8753-aed89e89610e/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[43871,43884] [2021-10-13 07:45:43,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:43,925 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:45:43,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43 WrapperNode [2021-10-13 07:45:43,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:43,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:43,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:45:43,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:45:43,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:43,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:44,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:45:44,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:45:44,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:45:44,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:45:44,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:45:44,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:45:44,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:45:44,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (1/1) ... [2021-10-13 07:45:44,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:44,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:45:44,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:45:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:45:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:45:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:45:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:45:44,450 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:45:45,369 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:45:45,369 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:45:45,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:45:45,896 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:45:45,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:45 BoogieIcfgContainer [2021-10-13 07:45:45,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:45:45,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:45:45,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:45:45,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:45:45,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:43" (1/3) ... [2021-10-13 07:45:45,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f61aa73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:45, skipping insertion in model container [2021-10-13 07:45:45,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43" (2/3) ... [2021-10-13 07:45:45,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f61aa73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:45, skipping insertion in model container [2021-10-13 07:45:45,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:45" (3/3) ... [2021-10-13 07:45:45,913 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2021-10-13 07:45:45,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:45:45,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:45:46,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:45:46,029 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 07:45:46,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:45:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.7714285714285714) internal successors, (186), 106 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 07:45:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:45:46,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:46,066 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:46,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:46,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1357673060, now seen corresponding path program 1 times [2021-10-13 07:45:46,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:46,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313519006] [2021-10-13 07:45:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:46,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:46,371 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 07:45:46,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:46,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313519006] [2021-10-13 07:45:46,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313519006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:46,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:46,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:46,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113271062] [2021-10-13 07:45:46,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:46,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:46,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:46,413 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.7714285714285714) internal successors, (186), 106 states have internal predecessors, (186), 0 states have call successors, (0), 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 9.333333333333334) internal successors, (28), 2 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 07:45:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:46,711 INFO L93 Difference]: Finished difference Result 233 states and 404 transitions. [2021-10-13 07:45:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 07:45:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:46,734 INFO L225 Difference]: With dead ends: 233 [2021-10-13 07:45:46,734 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 07:45:46,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 07:45:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-13 07:45:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4789915966386555) internal successors, (176), 119 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 07:45:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2021-10-13 07:45:46,824 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 28 [2021-10-13 07:45:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:46,825 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2021-10-13 07:45:46,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 07:45:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2021-10-13 07:45:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 07:45:46,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:46,834 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:46,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:45:46,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:46,837 INFO L82 PathProgramCache]: Analyzing trace with hash 416356117, now seen corresponding path program 1 times [2021-10-13 07:45:46,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:46,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441591998] [2021-10-13 07:45:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:46,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:47,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:47,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441591998] [2021-10-13 07:45:47,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441591998] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:47,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:47,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:47,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187265083] [2021-10-13 07:45:47,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:47,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:47,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:47,033 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 07:45:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:47,234 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions. [2021-10-13 07:45:47,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:47,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-10-13 07:45:47,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:47,243 INFO L225 Difference]: With dead ends: 259 [2021-10-13 07:45:47,244 INFO L226 Difference]: Without dead ends: 141 [2021-10-13 07:45:47,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-13 07:45:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-10-13 07:45:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.434782608695652) internal successors, (198), 138 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2021-10-13 07:45:47,281 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 42 [2021-10-13 07:45:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:47,282 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2021-10-13 07:45:47,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 07:45:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2021-10-13 07:45:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 07:45:47,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:47,290 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:47,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:45:47,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:47,295 INFO L82 PathProgramCache]: Analyzing trace with hash 231823215, now seen corresponding path program 1 times [2021-10-13 07:45:47,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:47,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099775861] [2021-10-13 07:45:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:47,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:47,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:47,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099775861] [2021-10-13 07:45:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099775861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:47,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406393411] [2021-10-13 07:45:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:47,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:47,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:45:47,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:45:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:47,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:45:47,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:45:48,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:45:48,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406393411] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:48,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:45:48,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-13 07:45:48,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320229822] [2021-10-13 07:45:48,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:45:48,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:45:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:45:48,408 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 07:45:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:48,889 INFO L93 Difference]: Finished difference Result 381 states and 577 transitions. [2021-10-13 07:45:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:45:48,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 59 [2021-10-13 07:45:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:48,893 INFO L225 Difference]: With dead ends: 381 [2021-10-13 07:45:48,894 INFO L226 Difference]: Without dead ends: 244 [2021-10-13 07:45:48,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:45:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-13 07:45:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 206. [2021-10-13 07:45:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3560975609756099) internal successors, (278), 205 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2021-10-13 07:45:48,930 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 59 [2021-10-13 07:45:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:48,931 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2021-10-13 07:45:48,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 07:45:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2021-10-13 07:45:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:45:48,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:48,940 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:48,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 07:45:49,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:49,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:49,162 INFO L82 PathProgramCache]: Analyzing trace with hash -153979078, now seen corresponding path program 1 times [2021-10-13 07:45:49,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:49,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549355649] [2021-10-13 07:45:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:49,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:45:49,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:49,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549355649] [2021-10-13 07:45:49,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549355649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:49,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:49,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:49,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401107985] [2021-10-13 07:45:49,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:49,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:49,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:49,314 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:45:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:49,516 INFO L93 Difference]: Finished difference Result 443 states and 612 transitions. [2021-10-13 07:45:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:49,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 79 [2021-10-13 07:45:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:49,521 INFO L225 Difference]: With dead ends: 443 [2021-10-13 07:45:49,522 INFO L226 Difference]: Without dead ends: 239 [2021-10-13 07:45:49,524 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 07:45:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-13 07:45:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2021-10-13 07:45:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.3333333333333333) internal successors, (304), 228 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 07:45:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 304 transitions. [2021-10-13 07:45:49,540 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 304 transitions. Word has length 79 [2021-10-13 07:45:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:49,542 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 304 transitions. [2021-10-13 07:45:49,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:45:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 304 transitions. [2021-10-13 07:45:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-13 07:45:49,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:49,551 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:49,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:45:49,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:49,552 INFO L82 PathProgramCache]: Analyzing trace with hash 122566928, now seen corresponding path program 1 times [2021-10-13 07:45:49,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:49,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614462537] [2021-10-13 07:45:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:49,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:45:49,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:49,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614462537] [2021-10-13 07:45:49,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614462537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:49,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:49,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:49,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024234961] [2021-10-13 07:45:49,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:49,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:49,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:49,689 INFO L87 Difference]: Start difference. First operand 229 states and 304 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 07:45:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:49,856 INFO L93 Difference]: Finished difference Result 505 states and 677 transitions. [2021-10-13 07:45:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 98 [2021-10-13 07:45:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:49,859 INFO L225 Difference]: With dead ends: 505 [2021-10-13 07:45:49,860 INFO L226 Difference]: Without dead ends: 278 [2021-10-13 07:45:49,861 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 07:45:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-13 07:45:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2021-10-13 07:45:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.307116104868914) internal successors, (349), 267 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 07:45:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 349 transitions. [2021-10-13 07:45:49,872 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 349 transitions. Word has length 98 [2021-10-13 07:45:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:49,873 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 349 transitions. [2021-10-13 07:45:49,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 07:45:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 349 transitions. [2021-10-13 07:45:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 07:45:49,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:49,875 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-10-13 07:45:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:45:49,876 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1525403596, now seen corresponding path program 1 times [2021-10-13 07:45:49,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:49,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619941065] [2021-10-13 07:45:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:49,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 07:45:49,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:49,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619941065] [2021-10-13 07:45:49,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619941065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:49,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126090387] [2021-10-13 07:45:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:49,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:49,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:49,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:45:50,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:45:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:50,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:45:50,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-13 07:45:50,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-13 07:45:51,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126090387] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:51,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:45:51,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 10 [2021-10-13 07:45:51,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865141530] [2021-10-13 07:45:51,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:45:51,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:45:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:45:51,012 INFO L87 Difference]: Start difference. First operand 268 states and 349 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 07:45:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:51,192 INFO L93 Difference]: Finished difference Result 1801 states and 2353 transitions. [2021-10-13 07:45:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:45:51,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 103 [2021-10-13 07:45:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:51,205 INFO L225 Difference]: With dead ends: 1801 [2021-10-13 07:45:51,205 INFO L226 Difference]: Without dead ends: 1535 [2021-10-13 07:45:51,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:45:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-10-13 07:45:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 531. [2021-10-13 07:45:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3056603773584905) internal successors, (692), 530 states have internal predecessors, (692), 0 states have call successors, (0), 0 states 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 07:45:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 692 transitions. [2021-10-13 07:45:51,247 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 692 transitions. Word has length 103 [2021-10-13 07:45:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:51,249 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 692 transitions. [2021-10-13 07:45:51,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 07:45:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 692 transitions. [2021-10-13 07:45:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 07:45:51,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:51,256 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-10-13 07:45:51,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:51,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 07:45:51,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -49523194, now seen corresponding path program 1 times [2021-10-13 07:45:51,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:51,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388985173] [2021-10-13 07:45:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:51,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 07:45:51,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:51,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388985173] [2021-10-13 07:45:51,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388985173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:51,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764774087] [2021-10-13 07:45:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:51,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:51,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:45:51,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:45:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:51,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:45:51,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-10-13 07:45:52,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:45:52,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764774087] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:52,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:45:52,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 5 [2021-10-13 07:45:52,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203810153] [2021-10-13 07:45:52,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:52,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:52,574 INFO L87 Difference]: Start difference. First operand 531 states and 692 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 07:45:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:52,634 INFO L93 Difference]: Finished difference Result 980 states and 1289 transitions. [2021-10-13 07:45:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:52,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 07:45:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:52,642 INFO L225 Difference]: With dead ends: 980 [2021-10-13 07:45:52,643 INFO L226 Difference]: Without dead ends: 978 [2021-10-13 07:45:52,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-13 07:45:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 938. [2021-10-13 07:45:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.3308431163287087) internal successors, (1247), 937 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 07:45:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1247 transitions. [2021-10-13 07:45:52,690 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1247 transitions. Word has length 104 [2021-10-13 07:45:52,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:52,691 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 1247 transitions. [2021-10-13 07:45:52,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 07:45:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1247 transitions. [2021-10-13 07:45:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 07:45:52,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:52,694 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-10-13 07:45:52,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:52,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:45:52,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1788706547, now seen corresponding path program 1 times [2021-10-13 07:45:52,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:52,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202902426] [2021-10-13 07:45:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:52,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:45:52,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:52,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202902426] [2021-10-13 07:45:52,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202902426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:52,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:52,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:52,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417239414] [2021-10-13 07:45:52,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:53,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:53,010 INFO L87 Difference]: Start difference. First operand 938 states and 1247 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 07:45:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:53,264 INFO L93 Difference]: Finished difference Result 2078 states and 2848 transitions. [2021-10-13 07:45:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:53,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 07:45:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:53,273 INFO L225 Difference]: With dead ends: 2078 [2021-10-13 07:45:53,274 INFO L226 Difference]: Without dead ends: 1138 [2021-10-13 07:45:53,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-10-13 07:45:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1126. [2021-10-13 07:45:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 1.3768888888888888) internal successors, (1549), 1125 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states 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 07:45:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1549 transitions. [2021-10-13 07:45:53,331 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1549 transitions. Word has length 106 [2021-10-13 07:45:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:53,332 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1549 transitions. [2021-10-13 07:45:53,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 07:45:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1549 transitions. [2021-10-13 07:45:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 07:45:53,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:53,335 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-10-13 07:45:53,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:45:53,335 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:53,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1922137015, now seen corresponding path program 1 times [2021-10-13 07:45:53,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:53,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750186893] [2021-10-13 07:45:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:53,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-13 07:45:53,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:53,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750186893] [2021-10-13 07:45:53,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750186893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:53,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:53,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:53,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96730954] [2021-10-13 07:45:53,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:53,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:53,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:53,391 INFO L87 Difference]: Start difference. First operand 1126 states and 1549 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:53,576 INFO L93 Difference]: Finished difference Result 2388 states and 3325 transitions. [2021-10-13 07:45:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:53,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 07:45:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:53,586 INFO L225 Difference]: With dead ends: 2388 [2021-10-13 07:45:53,587 INFO L226 Difference]: Without dead ends: 1264 [2021-10-13 07:45:53,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-13 07:45:53,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1226. [2021-10-13 07:45:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 1.3559183673469388) internal successors, (1661), 1225 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states 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 07:45:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1661 transitions. [2021-10-13 07:45:53,652 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1661 transitions. Word has length 110 [2021-10-13 07:45:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:53,652 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1661 transitions. [2021-10-13 07:45:53,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1661 transitions. [2021-10-13 07:45:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-13 07:45:53,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:53,672 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:53,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:45:53,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash -136183893, now seen corresponding path program 1 times [2021-10-13 07:45:53,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:53,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427182311] [2021-10-13 07:45:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:53,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:45:53,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:53,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427182311] [2021-10-13 07:45:53,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427182311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:53,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:53,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:53,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080200922] [2021-10-13 07:45:53,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:53,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:53,730 INFO L87 Difference]: Start difference. First operand 1226 states and 1661 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 07:45:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:53,900 INFO L93 Difference]: Finished difference Result 2566 states and 3456 transitions. [2021-10-13 07:45:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 07:45:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:53,911 INFO L225 Difference]: With dead ends: 2566 [2021-10-13 07:45:53,911 INFO L226 Difference]: Without dead ends: 1342 [2021-10-13 07:45:53,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-10-13 07:45:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1334. [2021-10-13 07:45:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 1.3360840210052514) internal successors, (1781), 1333 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states 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 07:45:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1781 transitions. [2021-10-13 07:45:53,978 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1781 transitions. Word has length 132 [2021-10-13 07:45:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:53,979 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1781 transitions. [2021-10-13 07:45:53,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 07:45:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1781 transitions. [2021-10-13 07:45:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-13 07:45:53,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:53,983 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:53,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:45:53,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1290401762, now seen corresponding path program 1 times [2021-10-13 07:45:53,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:53,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340731475] [2021-10-13 07:45:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:53,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-13 07:45:54,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:54,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340731475] [2021-10-13 07:45:54,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340731475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:54,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:54,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:54,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631845251] [2021-10-13 07:45:54,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:54,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:54,046 INFO L87 Difference]: Start difference. First operand 1334 states and 1781 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 07:45:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:54,292 INFO L93 Difference]: Finished difference Result 2830 states and 3852 transitions. [2021-10-13 07:45:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:54,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 135 [2021-10-13 07:45:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:54,303 INFO L225 Difference]: With dead ends: 2830 [2021-10-13 07:45:54,303 INFO L226 Difference]: Without dead ends: 1454 [2021-10-13 07:45:54,306 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 07:45:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-10-13 07:45:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1450. [2021-10-13 07:45:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 1.3229813664596273) internal successors, (1917), 1449 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states 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 07:45:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1917 transitions. [2021-10-13 07:45:54,404 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1917 transitions. Word has length 135 [2021-10-13 07:45:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:54,405 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 1917 transitions. [2021-10-13 07:45:54,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 07:45:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1917 transitions. [2021-10-13 07:45:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-13 07:45:54,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:54,409 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:54,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:45:54,410 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:54,411 INFO L82 PathProgramCache]: Analyzing trace with hash 137159838, now seen corresponding path program 1 times [2021-10-13 07:45:54,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:54,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728587204] [2021-10-13 07:45:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:54,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 117 proven. 113 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 07:45:54,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:54,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728587204] [2021-10-13 07:45:54,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728587204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:54,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308586757] [2021-10-13 07:45:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:54,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:54,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:45:54,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:45:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:54,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:45:54,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 07:45:55,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:45:56,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308586757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:45:56,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1060804510] [2021-10-13 07:45:56,704 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2021-10-13 07:45:56,704 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:45:56,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:45:56,724 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:45:56,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:45:57,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,731 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:45:57,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:45:57,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:45:57,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:45:57,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-13 07:45:57,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:45:57,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:45:57,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:45:57,846 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:45:57,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:45:57,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:45:57,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:45:57,890 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:45:57,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:45:57,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:45:57,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:45:57,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:57,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:45:57,932 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:45:57,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:45:58,123 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:58,199 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-13 07:45:58,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-13 07:45:58,242 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:45:58,245 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-13 07:45:58,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:58,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:58,473 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_22| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:45:58,477 INFO L168 Benchmark]: Toolchain (without parser) took 15090.37 ms. Allocated memory was 92.3 MB in the beginning and 211.8 MB in the end (delta: 119.5 MB). Free memory was 56.3 MB in the beginning and 165.2 MB in the end (delta: -108.9 MB). Peak memory consumption was 125.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:58,478 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 28.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:45:58,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.66 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 56.1 MB in the beginning and 86.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:58,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.00 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 83.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:58,479 INFO L168 Benchmark]: Boogie Preprocessor took 109.63 ms. Allocated memory is still 115.3 MB. Free memory was 83.4 MB in the beginning and 81.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:58,479 INFO L168 Benchmark]: RCFGBuilder took 1755.08 ms. Allocated memory is still 115.3 MB. Free memory was 81.3 MB in the beginning and 58.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:58,480 INFO L168 Benchmark]: TraceAbstraction took 12573.62 ms. Allocated memory was 115.3 MB in the beginning and 211.8 MB in the end (delta: 96.5 MB). Free memory was 58.3 MB in the beginning and 165.2 MB in the end (delta: -106.9 MB). Peak memory consumption was 104.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:58,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 28.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 550.66 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 56.1 MB in the beginning and 86.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.00 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 83.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.63 ms. Allocated memory is still 115.3 MB. Free memory was 83.4 MB in the beginning and 81.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1755.08 ms. Allocated memory is still 115.3 MB. Free memory was 81.3 MB in the beginning and 58.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12573.62 ms. Allocated memory was 115.3 MB in the beginning and 211.8 MB in the end (delta: 96.5 MB). Free memory was 58.3 MB in the beginning and 165.2 MB in the end (delta: -106.9 MB). Peak memory consumption was 104.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_22| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_22|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:45:58,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:46:01,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:46:01,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:46:01,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:46:01,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:46:01,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:46:01,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:46:01,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:46:01,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:46:01,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:46:01,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:46:01,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:46:01,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:46:01,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:46:01,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:46:01,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:46:01,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:46:01,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:46:01,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:46:01,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:46:01,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:46:01,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:46:01,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:46:01,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:46:01,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:46:01,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:46:01,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:46:01,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:46:01,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:46:01,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:46:01,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:46:01,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:46:01,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:46:01,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:46:01,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:46:01,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:46:01,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:46:01,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:46:01,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:46:01,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:46:01,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:46:01,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:46:01,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:46:01,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:46:01,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:46:01,856 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:46:01,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:46:01,857 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:46:01,857 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:46:01,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:46:01,858 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:46:01,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:46:01,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:46:01,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:46:01,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:46:01,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:46:01,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:46:01,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:46:01,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:46:01,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:46:01,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:46:01,864 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:46:01,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:46:01,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:46:01,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:46:01,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:46:01,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:46:01,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:46:01,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:46:01,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:46:01,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:46:01,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:46:01,866 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:46:01,867 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:46:01,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:46:01,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:46:01,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:46:01,868 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_d79fc51a-5da1-4673-8753-aed89e89610e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fc077d874a336f18c68c9b79d68b4c2009b140 [2021-10-13 07:46:02,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:46:02,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:46:02,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:46:02,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:46:02,369 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:46:02,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-13 07:46:02,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/555cfd265/63be4f1d5a404be0b173836bd2d68cfe/FLAGafc047869 [2021-10-13 07:46:03,327 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:46:03,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-13 07:46:03,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/555cfd265/63be4f1d5a404be0b173836bd2d68cfe/FLAGafc047869 [2021-10-13 07:46:03,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/data/555cfd265/63be4f1d5a404be0b173836bd2d68cfe [2021-10-13 07:46:03,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:46:03,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:46:03,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:46:03,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:46:03,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:46:03,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:03" (1/1) ... [2021-10-13 07:46:03,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee497f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:03, skipping insertion in model container [2021-10-13 07:46:03,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:03" (1/1) ... [2021-10-13 07:46:03,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:46:03,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:46:04,013 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_d79fc51a-5da1-4673-8753-aed89e89610e/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[43871,43884] [2021-10-13 07:46:04,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:46:04,055 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:46:04,198 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_d79fc51a-5da1-4673-8753-aed89e89610e/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[43871,43884] [2021-10-13 07:46:04,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:46:04,243 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:46:04,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04 WrapperNode [2021-10-13 07:46:04,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:46:04,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:46:04,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:46:04,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:46:04,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:46:04,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:46:04,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:46:04,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:46:04,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:46:04,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:46:04,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:46:04,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:46:04,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (1/1) ... [2021-10-13 07:46:04,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:46:04,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:46:04,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:46:04,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:46:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:46:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:46:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:46:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:46:04,670 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:46:05,579 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:46:05,579 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:46:05,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:46:05,591 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:46:05,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:05 BoogieIcfgContainer [2021-10-13 07:46:05,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:46:05,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:46:05,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:46:05,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:46:05,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:03" (1/3) ... [2021-10-13 07:46:05,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737dbf23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:05, skipping insertion in model container [2021-10-13 07:46:05,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:04" (2/3) ... [2021-10-13 07:46:05,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737dbf23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:05, skipping insertion in model container [2021-10-13 07:46:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:05" (3/3) ... [2021-10-13 07:46:05,624 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2021-10-13 07:46:05,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:46:05,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:46:05,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:46:05,703 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 07:46:05,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:46:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 145 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 07:46:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:46:05,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:05,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:05,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:05,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1801233509, now seen corresponding path program 1 times [2021-10-13 07:46:05,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:05,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189456623] [2021-10-13 07:46:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:05,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:05,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:05,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:05,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:46:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:05,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:46:05,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:06,257 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 07:46:06,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:06,431 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 07:46:06,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:06,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189456623] [2021-10-13 07:46:06,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189456623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:06,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:06,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:06,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502604057] [2021-10-13 07:46:06,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:06,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:06,472 INFO L87 Difference]: Start difference. First operand has 146 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 145 states have internal predecessors, (250), 0 states have call successors, (0), 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 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 07:46:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:06,755 INFO L93 Difference]: Finished difference Result 312 states and 534 transitions. [2021-10-13 07:46:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-13 07:46:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:06,771 INFO L225 Difference]: With dead ends: 312 [2021-10-13 07:46:06,772 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 07:46:06,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 07:46:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2021-10-13 07:46:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 150 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 07:46:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 229 transitions. [2021-10-13 07:46:06,850 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 229 transitions. Word has length 33 [2021-10-13 07:46:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:06,851 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 229 transitions. [2021-10-13 07:46:06,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 07:46:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 229 transitions. [2021-10-13 07:46:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 07:46:06,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:06,856 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:06,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:46:07,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:07,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1779167419, now seen corresponding path program 1 times [2021-10-13 07:46:07,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:07,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243609644] [2021-10-13 07:46:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:07,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:07,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:07,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:07,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:46:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:07,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:07,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:07,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:07,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:07,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243609644] [2021-10-13 07:46:07,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243609644] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:07,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:07,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:07,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44779240] [2021-10-13 07:46:07,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:07,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:07,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:07,511 INFO L87 Difference]: Start difference. First operand 151 states and 229 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 07:46:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:07,767 INFO L93 Difference]: Finished difference Result 319 states and 490 transitions. [2021-10-13 07:46:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:07,767 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 49 [2021-10-13 07:46:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:07,776 INFO L225 Difference]: With dead ends: 319 [2021-10-13 07:46:07,776 INFO L226 Difference]: Without dead ends: 176 [2021-10-13 07:46:07,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-13 07:46:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2021-10-13 07:46:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.4912280701754386) internal successors, (255), 171 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 07:46:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 255 transitions. [2021-10-13 07:46:07,816 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 255 transitions. Word has length 49 [2021-10-13 07:46:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:07,817 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 255 transitions. [2021-10-13 07:46:07,818 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 07:46:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 255 transitions. [2021-10-13 07:46:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 07:46:07,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:07,824 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:07,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:08,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:08,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:08,026 INFO L82 PathProgramCache]: Analyzing trace with hash 846918541, now seen corresponding path program 1 times [2021-10-13 07:46:08,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:08,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902206172] [2021-10-13 07:46:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:08,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:08,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:08,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:46:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:08,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:08,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:46:08,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:46:08,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:08,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902206172] [2021-10-13 07:46:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902206172] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:08,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:08,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:08,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773978399] [2021-10-13 07:46:08,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:08,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:08,632 INFO L87 Difference]: Start difference. First operand 172 states and 255 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 07:46:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:08,995 INFO L93 Difference]: Finished difference Result 422 states and 651 transitions. [2021-10-13 07:46:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 07:46:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:09,000 INFO L225 Difference]: With dead ends: 422 [2021-10-13 07:46:09,000 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 07:46:09,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 07:46:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 241. [2021-10-13 07:46:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.4625) internal successors, (351), 240 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 07:46:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 351 transitions. [2021-10-13 07:46:09,039 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 351 transitions. Word has length 70 [2021-10-13 07:46:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:09,040 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 351 transitions. [2021-10-13 07:46:09,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 07:46:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 351 transitions. [2021-10-13 07:46:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:46:09,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:09,045 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:09,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:09,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:09,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:09,260 INFO L82 PathProgramCache]: Analyzing trace with hash -215989280, now seen corresponding path program 1 times [2021-10-13 07:46:09,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:09,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285084430] [2021-10-13 07:46:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:09,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:09,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:09,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:09,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:46:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:09,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:46:09,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:46:09,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:09,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285084430] [2021-10-13 07:46:09,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285084430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:09,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:09,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:09,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569339825] [2021-10-13 07:46:09,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:09,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:09,882 INFO L87 Difference]: Start difference. First operand 241 states and 351 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 07:46:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:10,058 INFO L93 Difference]: Finished difference Result 502 states and 739 transitions. [2021-10-13 07:46:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:10,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 71 [2021-10-13 07:46:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:10,064 INFO L225 Difference]: With dead ends: 502 [2021-10-13 07:46:10,065 INFO L226 Difference]: Without dead ends: 269 [2021-10-13 07:46:10,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-13 07:46:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 264. [2021-10-13 07:46:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.44106463878327) internal successors, (379), 263 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 07:46:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 379 transitions. [2021-10-13 07:46:10,097 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 379 transitions. Word has length 71 [2021-10-13 07:46:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:10,098 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 379 transitions. [2021-10-13 07:46:10,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 07:46:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 379 transitions. [2021-10-13 07:46:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-13 07:46:10,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:10,104 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:10,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:10,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:10,322 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash 43387912, now seen corresponding path program 1 times [2021-10-13 07:46:10,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:10,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245542798] [2021-10-13 07:46:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:10,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:10,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:10,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:46:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:10,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:10,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:10,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:11,140 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:11,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245542798] [2021-10-13 07:46:11,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245542798] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:11,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:11,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813147070] [2021-10-13 07:46:11,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:11,151 INFO L87 Difference]: Start difference. First operand 264 states and 379 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:11,357 INFO L93 Difference]: Finished difference Result 559 states and 815 transitions. [2021-10-13 07:46:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-10-13 07:46:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:11,369 INFO L225 Difference]: With dead ends: 559 [2021-10-13 07:46:11,369 INFO L226 Difference]: Without dead ends: 303 [2021-10-13 07:46:11,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-13 07:46:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 289. [2021-10-13 07:46:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 288 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 07:46:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 409 transitions. [2021-10-13 07:46:11,408 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 409 transitions. Word has length 92 [2021-10-13 07:46:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 409 transitions. [2021-10-13 07:46:11,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 409 transitions. [2021-10-13 07:46:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-13 07:46:11,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:11,416 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:11,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:11,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:11,617 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1432120208, now seen corresponding path program 1 times [2021-10-13 07:46:11,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:11,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871045880] [2021-10-13 07:46:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:11,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:11,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:11,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:46:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:11,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:12,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:12,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:12,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871045880] [2021-10-13 07:46:12,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871045880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:12,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:12,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:12,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697014038] [2021-10-13 07:46:12,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:12,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:12,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:12,576 INFO L87 Difference]: Start difference. First operand 289 states and 409 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 07:46:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:12,930 INFO L93 Difference]: Finished difference Result 654 states and 957 transitions. [2021-10-13 07:46:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:12,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-10-13 07:46:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:12,934 INFO L225 Difference]: With dead ends: 654 [2021-10-13 07:46:12,934 INFO L226 Difference]: Without dead ends: 373 [2021-10-13 07:46:12,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-10-13 07:46:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 359. [2021-10-13 07:46:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4162011173184357) internal successors, (507), 358 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 07:46:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 507 transitions. [2021-10-13 07:46:12,953 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 507 transitions. Word has length 111 [2021-10-13 07:46:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:12,953 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 507 transitions. [2021-10-13 07:46:12,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 07:46:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 507 transitions. [2021-10-13 07:46:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 07:46:12,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:12,956 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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 07:46:12,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:13,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:13,171 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:13,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:13,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1900430797, now seen corresponding path program 1 times [2021-10-13 07:46:13,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:13,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403786917] [2021-10-13 07:46:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:13,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:13,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:46:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:13,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:13,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:46:13,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:46:14,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:14,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403786917] [2021-10-13 07:46:14,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403786917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:14,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:14,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:14,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632249220] [2021-10-13 07:46:14,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:14,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:14,076 INFO L87 Difference]: Start difference. First operand 359 states and 507 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 07:46:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:14,160 INFO L93 Difference]: Finished difference Result 1397 states and 1964 transitions. [2021-10-13 07:46:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:14,160 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 117 [2021-10-13 07:46:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:14,169 INFO L225 Difference]: With dead ends: 1397 [2021-10-13 07:46:14,170 INFO L226 Difference]: Without dead ends: 1046 [2021-10-13 07:46:14,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-10-13 07:46:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 360. [2021-10-13 07:46:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.415041782729805) internal successors, (508), 359 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 07:46:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 508 transitions. [2021-10-13 07:46:14,202 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 508 transitions. Word has length 117 [2021-10-13 07:46:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:14,203 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 508 transitions. [2021-10-13 07:46:14,203 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 07:46:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 508 transitions. [2021-10-13 07:46:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 07:46:14,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:14,206 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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 07:46:14,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:14,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:14,421 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 150553201, now seen corresponding path program 1 times [2021-10-13 07:46:14,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:14,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608495592] [2021-10-13 07:46:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:14,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:14,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:14,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:14,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:46:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:14,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:14,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:46:15,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:46:15,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:15,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608495592] [2021-10-13 07:46:15,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608495592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:15,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:15,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:15,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094178607] [2021-10-13 07:46:15,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:15,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:15,410 INFO L87 Difference]: Start difference. First operand 360 states and 508 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 07:46:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:15,456 INFO L93 Difference]: Finished difference Result 1054 states and 1482 transitions. [2021-10-13 07:46:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:15,457 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 117 [2021-10-13 07:46:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:15,463 INFO L225 Difference]: With dead ends: 1054 [2021-10-13 07:46:15,463 INFO L226 Difference]: Without dead ends: 702 [2021-10-13 07:46:15,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-10-13 07:46:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 360. [2021-10-13 07:46:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4122562674094707) internal successors, (507), 359 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 07:46:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 507 transitions. [2021-10-13 07:46:15,491 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 507 transitions. Word has length 117 [2021-10-13 07:46:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:15,492 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 507 transitions. [2021-10-13 07:46:15,492 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 07:46:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 507 transitions. [2021-10-13 07:46:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-13 07:46:15,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:15,496 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1] [2021-10-13 07:46:15,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:15,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:15,705 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1784226940, now seen corresponding path program 1 times [2021-10-13 07:46:15,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:15,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316013278] [2021-10-13 07:46:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:15,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:15,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:15,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:46:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:16,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:16,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 07:46:16,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 07:46:16,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:16,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316013278] [2021-10-13 07:46:16,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316013278] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:16,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:16,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:16,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142066288] [2021-10-13 07:46:16,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:16,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:16,861 INFO L87 Difference]: Start difference. First operand 360 states and 507 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 07:46:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:16,998 INFO L93 Difference]: Finished difference Result 1364 states and 1935 transitions. [2021-10-13 07:46:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 118 [2021-10-13 07:46:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:17,006 INFO L225 Difference]: With dead ends: 1364 [2021-10-13 07:46:17,006 INFO L226 Difference]: Without dead ends: 1012 [2021-10-13 07:46:17,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 232 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 07:46:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-10-13 07:46:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2021-10-13 07:46:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 1.4154302670623145) internal successors, (1431), 1011 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states 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 07:46:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1431 transitions. [2021-10-13 07:46:17,076 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1431 transitions. Word has length 118 [2021-10-13 07:46:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:17,077 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1431 transitions. [2021-10-13 07:46:17,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 07:46:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1431 transitions. [2021-10-13 07:46:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-13 07:46:17,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:17,083 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1] [2021-10-13 07:46:17,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:17,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:17,304 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:17,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1001148476, now seen corresponding path program 1 times [2021-10-13 07:46:17,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:17,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303275002] [2021-10-13 07:46:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:17,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:17,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:17,308 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:17,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:46:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:17,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:17,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 07:46:18,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 07:46:18,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:18,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303275002] [2021-10-13 07:46:18,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303275002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:18,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:18,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:18,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448204408] [2021-10-13 07:46:18,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:18,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:18,469 INFO L87 Difference]: Start difference. First operand 1012 states and 1431 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:18,551 INFO L93 Difference]: Finished difference Result 2040 states and 2880 transitions. [2021-10-13 07:46:18,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:18,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-13 07:46:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:18,560 INFO L225 Difference]: With dead ends: 2040 [2021-10-13 07:46:18,560 INFO L226 Difference]: Without dead ends: 1036 [2021-10-13 07:46:18,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-13 07:46:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2021-10-13 07:46:18,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 1.4106280193236715) internal successors, (1460), 1035 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 07:46:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1460 transitions. [2021-10-13 07:46:18,624 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1460 transitions. Word has length 118 [2021-10-13 07:46:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:18,625 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1460 transitions. [2021-10-13 07:46:18,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1460 transitions. [2021-10-13 07:46:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-13 07:46:18,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:18,629 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1] [2021-10-13 07:46:18,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:18,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:18,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1396322054, now seen corresponding path program 1 times [2021-10-13 07:46:18,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:18,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052755942] [2021-10-13 07:46:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:18,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:18,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:18,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:46:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:19,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:19,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-13 07:46:19,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-13 07:46:20,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:20,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052755942] [2021-10-13 07:46:20,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052755942] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:20,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:20,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:20,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952984479] [2021-10-13 07:46:20,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:20,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:20,085 INFO L87 Difference]: Start difference. First operand 1036 states and 1460 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:20,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:20,158 INFO L93 Difference]: Finished difference Result 2077 states and 2922 transitions. [2021-10-13 07:46:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:20,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-13 07:46:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:20,166 INFO L225 Difference]: With dead ends: 2077 [2021-10-13 07:46:20,167 INFO L226 Difference]: Without dead ends: 1049 [2021-10-13 07:46:20,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-10-13 07:46:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1049. [2021-10-13 07:46:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 1.4055343511450382) internal successors, (1473), 1048 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states 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 07:46:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1473 transitions. [2021-10-13 07:46:20,225 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1473 transitions. Word has length 118 [2021-10-13 07:46:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:20,226 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1473 transitions. [2021-10-13 07:46:20,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1473 transitions. [2021-10-13 07:46:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 07:46:20,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:20,230 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1] [2021-10-13 07:46:20,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:20,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:20,446 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 855711090, now seen corresponding path program 1 times [2021-10-13 07:46:20,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:20,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239418754] [2021-10-13 07:46:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:20,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:20,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:20,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:46:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:21,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:21,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:46:21,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:46:21,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:21,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239418754] [2021-10-13 07:46:21,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239418754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:21,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:21,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:21,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343635923] [2021-10-13 07:46:21,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:21,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:21,658 INFO L87 Difference]: Start difference. First operand 1049 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 07:46:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:21,808 INFO L93 Difference]: Finished difference Result 2734 states and 3858 transitions. [2021-10-13 07:46:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 120 [2021-10-13 07:46:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:21,820 INFO L225 Difference]: With dead ends: 2734 [2021-10-13 07:46:21,820 INFO L226 Difference]: Without dead ends: 1706 [2021-10-13 07:46:21,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-10-13 07:46:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1704. [2021-10-13 07:46:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.4081033470346447) internal successors, (2398), 1703 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states 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 07:46:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2398 transitions. [2021-10-13 07:46:21,910 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2398 transitions. Word has length 120 [2021-10-13 07:46:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:21,911 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2398 transitions. [2021-10-13 07:46:21,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 07:46:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2398 transitions. [2021-10-13 07:46:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-13 07:46:21,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:21,916 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:21,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:22,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:22,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:22,131 INFO L82 PathProgramCache]: Analyzing trace with hash -734348485, now seen corresponding path program 1 times [2021-10-13 07:46:22,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:22,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747939956] [2021-10-13 07:46:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:22,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:22,133 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:46:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:22,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:22,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:23,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:23,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:23,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747939956] [2021-10-13 07:46:23,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747939956] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:23,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:23,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:23,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786578494] [2021-10-13 07:46:23,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:23,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:23,362 INFO L87 Difference]: Start difference. First operand 1704 states and 2398 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 07:46:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:23,455 INFO L93 Difference]: Finished difference Result 3387 states and 4771 transitions. [2021-10-13 07:46:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 127 [2021-10-13 07:46:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:23,466 INFO L225 Difference]: With dead ends: 3387 [2021-10-13 07:46:23,466 INFO L226 Difference]: Without dead ends: 1704 [2021-10-13 07:46:23,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-10-13 07:46:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-10-13 07:46:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.4028185554903112) internal successors, (2389), 1703 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states 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 07:46:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2389 transitions. [2021-10-13 07:46:23,557 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2389 transitions. Word has length 127 [2021-10-13 07:46:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:23,558 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2389 transitions. [2021-10-13 07:46:23,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 07:46:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2389 transitions. [2021-10-13 07:46:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-13 07:46:23,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:23,563 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:23,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:23,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:23,780 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:23,780 INFO L82 PathProgramCache]: Analyzing trace with hash 297785048, now seen corresponding path program 1 times [2021-10-13 07:46:23,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:23,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291149796] [2021-10-13 07:46:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:23,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:23,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:23,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:46:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:24,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:24,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:46:25,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:25,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291149796] [2021-10-13 07:46:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291149796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:25,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:25,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:25,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765839128] [2021-10-13 07:46:25,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:25,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:25,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:25,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:25,084 INFO L87 Difference]: Start difference. First operand 1704 states and 2389 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:25,165 INFO L93 Difference]: Finished difference Result 3433 states and 4805 transitions. [2021-10-13 07:46:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:25,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-10-13 07:46:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:25,199 INFO L225 Difference]: With dead ends: 3433 [2021-10-13 07:46:25,199 INFO L226 Difference]: Without dead ends: 1750 [2021-10-13 07:46:25,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-10-13 07:46:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1750. [2021-10-13 07:46:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1749 states have (on average 1.3950829045168667) internal successors, (2440), 1749 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 07:46:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2440 transitions. [2021-10-13 07:46:25,287 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2440 transitions. Word has length 159 [2021-10-13 07:46:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:25,288 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 2440 transitions. [2021-10-13 07:46:25,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:25,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2440 transitions. [2021-10-13 07:46:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-13 07:46:25,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:25,292 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:25,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:25,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:25,507 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1669592346, now seen corresponding path program 1 times [2021-10-13 07:46:25,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:25,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798741080] [2021-10-13 07:46:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:25,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:25,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:25,510 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:46:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:26,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:46:26,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:46:26,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:26,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798741080] [2021-10-13 07:46:26,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798741080] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:26,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:26,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:26,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464806395] [2021-10-13 07:46:26,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:26,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:26,900 INFO L87 Difference]: Start difference. First operand 1750 states and 2440 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 07:46:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:27,128 INFO L93 Difference]: Finished difference Result 3634 states and 5135 transitions. [2021-10-13 07:46:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:27,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-10-13 07:46:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:27,140 INFO L225 Difference]: With dead ends: 3634 [2021-10-13 07:46:27,141 INFO L226 Difference]: Without dead ends: 1905 [2021-10-13 07:46:27,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 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 07:46:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2021-10-13 07:46:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1905. [2021-10-13 07:46:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 1.3760504201680672) internal successors, (2620), 1904 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states 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 07:46:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2620 transitions. [2021-10-13 07:46:27,243 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2620 transitions. Word has length 159 [2021-10-13 07:46:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:27,244 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2620 transitions. [2021-10-13 07:46:27,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 07:46:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2620 transitions. [2021-10-13 07:46:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-10-13 07:46:27,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:27,250 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:27,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:27,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:27,463 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash -67040907, now seen corresponding path program 1 times [2021-10-13 07:46:27,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:27,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784591179] [2021-10-13 07:46:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:27,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:27,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:27,466 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:27,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:46:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:28,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:28,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-13 07:46:28,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-13 07:46:28,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:28,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784591179] [2021-10-13 07:46:28,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784591179] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:28,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:28,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:46:28,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913002269] [2021-10-13 07:46:28,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:28,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:28,968 INFO L87 Difference]: Start difference. First operand 1905 states and 2620 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 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 07:46:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:29,122 INFO L93 Difference]: Finished difference Result 4504 states and 6216 transitions. [2021-10-13 07:46:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 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) Word has length 187 [2021-10-13 07:46:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:29,137 INFO L225 Difference]: With dead ends: 4504 [2021-10-13 07:46:29,137 INFO L226 Difference]: Without dead ends: 2620 [2021-10-13 07:46:29,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-10-13 07:46:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2021-10-13 07:46:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2617 states have (on average 1.3798242262132212) internal successors, (3611), 2617 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states 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 07:46:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3611 transitions. [2021-10-13 07:46:29,241 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3611 transitions. Word has length 187 [2021-10-13 07:46:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:29,241 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 3611 transitions. [2021-10-13 07:46:29,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 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 07:46:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3611 transitions. [2021-10-13 07:46:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-13 07:46:29,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:29,248 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 07:46:29,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:29,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:29,464 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash 917057880, now seen corresponding path program 1 times [2021-10-13 07:46:29,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:29,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920819599] [2021-10-13 07:46:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:29,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:29,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:29,467 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:29,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:46:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:30,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:30,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-10-13 07:46:30,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-10-13 07:46:31,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:31,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920819599] [2021-10-13 07:46:31,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920819599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:31,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:31,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:31,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621145426] [2021-10-13 07:46:31,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:31,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:31,174 INFO L87 Difference]: Start difference. First operand 2618 states and 3611 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 07:46:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:31,382 INFO L93 Difference]: Finished difference Result 5279 states and 7296 transitions. [2021-10-13 07:46:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:31,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 232 [2021-10-13 07:46:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:31,398 INFO L225 Difference]: With dead ends: 5279 [2021-10-13 07:46:31,398 INFO L226 Difference]: Without dead ends: 2682 [2021-10-13 07:46:31,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 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 07:46:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-10-13 07:46:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2618. [2021-10-13 07:46:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2617 states have (on average 1.3316774933129538) internal successors, (3485), 2617 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states 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 07:46:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3485 transitions. [2021-10-13 07:46:31,512 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3485 transitions. Word has length 232 [2021-10-13 07:46:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:31,512 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 3485 transitions. [2021-10-13 07:46:31,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 07:46:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3485 transitions. [2021-10-13 07:46:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-10-13 07:46:31,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:31,522 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2021-10-13 07:46:31,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:31,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:31,736 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:31,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1823531945, now seen corresponding path program 1 times [2021-10-13 07:46:31,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:31,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521922841] [2021-10-13 07:46:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:31,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:31,739 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:31,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:46:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:32,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:32,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-10-13 07:46:33,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-10-13 07:46:33,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:33,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521922841] [2021-10-13 07:46:33,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521922841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:33,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:33,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:46:33,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643476883] [2021-10-13 07:46:33,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:33,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:33,588 INFO L87 Difference]: Start difference. First operand 2618 states and 3485 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:33,795 INFO L93 Difference]: Finished difference Result 5432 states and 7323 transitions. [2021-10-13 07:46:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:33,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-10-13 07:46:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:33,821 INFO L225 Difference]: With dead ends: 5432 [2021-10-13 07:46:33,821 INFO L226 Difference]: Without dead ends: 2835 [2021-10-13 07:46:33,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 507 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 07:46:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-10-13 07:46:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2821. [2021-10-13 07:46:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2820 states have (on average 1.3202127659574467) internal successors, (3723), 2820 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states 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 07:46:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3723 transitions. [2021-10-13 07:46:33,935 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3723 transitions. Word has length 255 [2021-10-13 07:46:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:33,935 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3723 transitions. [2021-10-13 07:46:33,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3723 transitions. [2021-10-13 07:46:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-10-13 07:46:33,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:33,945 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 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] [2021-10-13 07:46:33,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:34,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:34,160 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash -791509653, now seen corresponding path program 1 times [2021-10-13 07:46:34,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:34,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103183546] [2021-10-13 07:46:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:34,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:34,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:34,162 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:34,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:46:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:35,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:46:35,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:35,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:36,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:36,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103183546] [2021-10-13 07:46:36,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103183546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:46:36,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076741050] [2021-10-13 07:46:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:36,423 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:46:36,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:46:36,426 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:46:36,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-13 07:46:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:38,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:38,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-10-13 07:46:38,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-10-13 07:46:39,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076741050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:39,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:46:39,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-10-13 07:46:39,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22534734] [2021-10-13 07:46:39,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:39,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:46:39,653 INFO L87 Difference]: Start difference. First operand 2821 states and 3723 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 07:46:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:39,821 INFO L93 Difference]: Finished difference Result 7902 states and 10450 transitions. [2021-10-13 07:46:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:39,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 289 [2021-10-13 07:46:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:39,875 INFO L225 Difference]: With dead ends: 7902 [2021-10-13 07:46:39,876 INFO L226 Difference]: Without dead ends: 5102 [2021-10-13 07:46:39,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:46:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2021-10-13 07:46:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2021-10-13 07:46:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5099 states have (on average 1.3200627574034125) internal successors, (6731), 5099 states have internal predecessors, (6731), 0 states have call successors, (0), 0 states 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 07:46:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 6731 transitions. [2021-10-13 07:46:40,116 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 6731 transitions. Word has length 289 [2021-10-13 07:46:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:40,117 INFO L470 AbstractCegarLoop]: Abstraction has 5100 states and 6731 transitions. [2021-10-13 07:46:40,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 07:46:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 6731 transitions. [2021-10-13 07:46:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-10-13 07:46:40,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:40,129 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 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] [2021-10-13 07:46:40,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:40,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:40,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:40,537 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash -230809875, now seen corresponding path program 1 times [2021-10-13 07:46:40,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:40,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103847217] [2021-10-13 07:46:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:40,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:40,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:40,540 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:40,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:46:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:41,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:46:41,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:42,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:43,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:43,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103847217] [2021-10-13 07:46:43,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103847217] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:46:43,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1687360512] [2021-10-13 07:46:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:43,430 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:46:43,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:46:43,431 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:46:43,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 07:46:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:45,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:46:45,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:46,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:46,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1687360512] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:46:46,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437553911] [2021-10-13 07:46:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:46,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:46:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:46:46,983 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:46:46,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 07:46:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:46:49,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:49,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:46:50,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437553911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:46:50,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:46:50,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:46:50,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213064400] [2021-10-13 07:46:50,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:50,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:50,588 INFO L87 Difference]: Start difference. First operand 5100 states and 6731 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 07:46:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:51,288 INFO L93 Difference]: Finished difference Result 15401 states and 20364 transitions. [2021-10-13 07:46:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:46:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 289 [2021-10-13 07:46:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:51,335 INFO L225 Difference]: With dead ends: 15401 [2021-10-13 07:46:51,335 INFO L226 Difference]: Without dead ends: 10322 [2021-10-13 07:46:51,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1730 GetRequests, 1727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:46:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-10-13 07:46:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 6725. [2021-10-13 07:46:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6725 states, 6724 states have (on average 1.3343248066627007) internal successors, (8972), 6724 states have internal predecessors, (8972), 0 states have call successors, (0), 0 states 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 07:46:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6725 states to 6725 states and 8972 transitions. [2021-10-13 07:46:51,729 INFO L78 Accepts]: Start accepts. Automaton has 6725 states and 8972 transitions. Word has length 289 [2021-10-13 07:46:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:51,729 INFO L470 AbstractCegarLoop]: Abstraction has 6725 states and 8972 transitions. [2021-10-13 07:46:51,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 07:46:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6725 states and 8972 transitions. [2021-10-13 07:46:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 07:46:51,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:51,745 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:46:51,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 07:46:51,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-10-13 07:46:52,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-13 07:46:52,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:52,361 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:52,361 INFO L82 PathProgramCache]: Analyzing trace with hash -947903949, now seen corresponding path program 1 times [2021-10-13 07:46:52,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:52,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786277796] [2021-10-13 07:46:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:52,362 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:52,363 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:52,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:46:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:54,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:46:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-13 07:46:55,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-13 07:46:55,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:55,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786277796] [2021-10-13 07:46:55,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786277796] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:46:55,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [304305805] [2021-10-13 07:46:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:55,683 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:46:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:46:55,684 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:46:55,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-13 07:46:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:58,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:46:58,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-13 07:46:59,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-13 07:47:00,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [304305805] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:47:00,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346025756] [2021-10-13 07:47:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:00,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:47:00,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:47:00,076 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:47:00,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 07:47:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:02,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:47:02,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-13 07:47:03,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-13 07:47:04,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346025756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:47:04,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:47:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:47:04,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954787925] [2021-10-13 07:47:04,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:47:04,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:47:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:47:04,365 INFO L87 Difference]: Start difference. First operand 6725 states and 8972 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 07:47:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:05,085 INFO L93 Difference]: Finished difference Result 17506 states and 23694 transitions. [2021-10-13 07:47:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:47:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 298 [2021-10-13 07:47:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:05,161 INFO L225 Difference]: With dead ends: 17506 [2021-10-13 07:47:05,161 INFO L226 Difference]: Without dead ends: 10802 [2021-10-13 07:47:05,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1784 GetRequests, 1781 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:47:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2021-10-13 07:47:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 7633. [2021-10-13 07:47:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 7632 states have (on average 1.315251572327044) internal successors, (10038), 7632 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states 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 07:47:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 10038 transitions. [2021-10-13 07:47:05,466 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 10038 transitions. Word has length 298 [2021-10-13 07:47:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:05,467 INFO L470 AbstractCegarLoop]: Abstraction has 7633 states and 10038 transitions. [2021-10-13 07:47:05,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 07:47:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 10038 transitions. [2021-10-13 07:47:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 07:47:05,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:47:05,482 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:47:05,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:05,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-13 07:47:05,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:06,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:47:06,092 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:47:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:47:06,093 INFO L82 PathProgramCache]: Analyzing trace with hash -80722317, now seen corresponding path program 1 times [2021-10-13 07:47:06,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:47:06,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134392372] [2021-10-13 07:47:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:06,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:47:06,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:47:06,096 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:47:06,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:47:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:08,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:47:08,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-10-13 07:47:09,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-10-13 07:47:10,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:47:10,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134392372] [2021-10-13 07:47:10,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134392372] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:47:10,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:47:10,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:47:10,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735915510] [2021-10-13 07:47:10,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:47:10,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:10,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:47:10,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:47:10,298 INFO L87 Difference]: Start difference. First operand 7633 states and 10038 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 07:47:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:10,493 INFO L93 Difference]: Finished difference Result 11500 states and 15126 transitions. [2021-10-13 07:47:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:47:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 298 [2021-10-13 07:47:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:10,515 INFO L225 Difference]: With dead ends: 11500 [2021-10-13 07:47:10,515 INFO L226 Difference]: Without dead ends: 7661 [2021-10-13 07:47:10,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 593 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 07:47:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7661 states. [2021-10-13 07:47:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7661 to 7659. [2021-10-13 07:47:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7659 states, 7658 states have (on average 1.3114390180203708) internal successors, (10043), 7658 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states 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 07:47:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7659 states to 7659 states and 10043 transitions. [2021-10-13 07:47:10,849 INFO L78 Accepts]: Start accepts. Automaton has 7659 states and 10043 transitions. Word has length 298 [2021-10-13 07:47:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:10,850 INFO L470 AbstractCegarLoop]: Abstraction has 7659 states and 10043 transitions. [2021-10-13 07:47:10,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 07:47:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7659 states and 10043 transitions. [2021-10-13 07:47:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-10-13 07:47:10,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:47:10,864 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 5, 5, 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] [2021-10-13 07:47:10,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:11,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:47:11,087 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:47:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:47:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash 575008099, now seen corresponding path program 1 times [2021-10-13 07:47:11,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:47:11,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90709158] [2021-10-13 07:47:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:11,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:47:11,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:47:11,091 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:47:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:47:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:13,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:47:13,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-10-13 07:47:14,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-10-13 07:47:15,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:47:15,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90709158] [2021-10-13 07:47:15,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90709158] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:47:15,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:47:15,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:47:15,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763098624] [2021-10-13 07:47:15,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:47:15,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:47:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:47:15,140 INFO L87 Difference]: Start difference. First operand 7659 states and 10043 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 07:47:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:15,506 INFO L93 Difference]: Finished difference Result 15889 states and 21116 transitions. [2021-10-13 07:47:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:47:15,506 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 319 [2021-10-13 07:47:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:15,526 INFO L225 Difference]: With dead ends: 15889 [2021-10-13 07:47:15,527 INFO L226 Difference]: Without dead ends: 8277 [2021-10-13 07:47:15,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 635 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 07:47:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2021-10-13 07:47:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 7899. [2021-10-13 07:47:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7898 states have (on average 1.3095720435553304) internal successors, (10343), 7898 states have internal predecessors, (10343), 0 states have call successors, (0), 0 states 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 07:47:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10343 transitions. [2021-10-13 07:47:15,824 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10343 transitions. Word has length 319 [2021-10-13 07:47:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:15,825 INFO L470 AbstractCegarLoop]: Abstraction has 7899 states and 10343 transitions. [2021-10-13 07:47:15,825 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 07:47:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10343 transitions. [2021-10-13 07:47:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-10-13 07:47:15,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:47:15,835 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 5, 5, 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 07:47:15,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:16,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:47:16,085 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:47:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:47:16,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1646229521, now seen corresponding path program 1 times [2021-10-13 07:47:16,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:47:16,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389670195] [2021-10-13 07:47:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:16,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:47:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:47:16,087 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:47:16,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 07:47:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:18,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:47:18,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-10-13 07:47:19,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-10-13 07:47:20,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:47:20,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389670195] [2021-10-13 07:47:20,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389670195] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:47:20,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:47:20,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:47:20,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807975920] [2021-10-13 07:47:20,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:47:20,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:20,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:47:20,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:47:20,395 INFO L87 Difference]: Start difference. First operand 7899 states and 10343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 07:47:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:20,844 INFO L93 Difference]: Finished difference Result 16795 states and 22485 transitions. [2021-10-13 07:47:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:47:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 320 [2021-10-13 07:47:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:20,865 INFO L225 Difference]: With dead ends: 16795 [2021-10-13 07:47:20,865 INFO L226 Difference]: Without dead ends: 8943 [2021-10-13 07:47:20,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:47:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8943 states. [2021-10-13 07:47:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8943 to 8885. [2021-10-13 07:47:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8885 states, 8884 states have (on average 1.2915353444394417) internal successors, (11474), 8884 states have internal predecessors, (11474), 0 states have call successors, (0), 0 states 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 07:47:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 11474 transitions. [2021-10-13 07:47:21,268 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 11474 transitions. Word has length 320 [2021-10-13 07:47:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 8885 states and 11474 transitions. [2021-10-13 07:47:21,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 07:47:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 11474 transitions. [2021-10-13 07:47:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-10-13 07:47:21,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:47:21,278 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:47:21,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:21,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:47:21,504 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:47:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:47:21,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1878786478, now seen corresponding path program 1 times [2021-10-13 07:47:21,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:47:21,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013392673] [2021-10-13 07:47:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:21,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:47:21,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:47:21,507 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:47:21,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 07:47:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:47:24,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-13 07:47:24,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-13 07:47:25,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:47:25,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013392673] [2021-10-13 07:47:25,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013392673] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:47:25,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:47:25,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:47:25,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693206308] [2021-10-13 07:47:25,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:47:25,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:47:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:47:25,471 INFO L87 Difference]: Start difference. First operand 8885 states and 11474 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 07:47:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:25,804 INFO L93 Difference]: Finished difference Result 14220 states and 18735 transitions. [2021-10-13 07:47:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:47:25,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 336 [2021-10-13 07:47:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:25,818 INFO L225 Difference]: With dead ends: 14220 [2021-10-13 07:47:25,818 INFO L226 Difference]: Without dead ends: 4609 [2021-10-13 07:47:25,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:47:25,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4609 states. [2021-10-13 07:47:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4609 to 4546. [2021-10-13 07:47:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4545 states have (on average 1.304070407040704) internal successors, (5927), 4545 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states 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 07:47:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 5927 transitions. [2021-10-13 07:47:25,957 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 5927 transitions. Word has length 336 [2021-10-13 07:47:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:25,958 INFO L470 AbstractCegarLoop]: Abstraction has 4546 states and 5927 transitions. [2021-10-13 07:47:25,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 07:47:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 5927 transitions. [2021-10-13 07:47:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-10-13 07:47:25,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:47:25,964 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 6, 6, 6, 6, 4, 3, 3, 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 07:47:25,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:26,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:47:26,183 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:47:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:47:26,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1933488823, now seen corresponding path program 1 times [2021-10-13 07:47:26,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:47:26,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490873567] [2021-10-13 07:47:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:26,185 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:47:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:47:26,186 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:47:26,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 07:47:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:47:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-10-13 07:47:29,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-10-13 07:47:29,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:47:29,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490873567] [2021-10-13 07:47:29,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490873567] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:47:29,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:47:29,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:47:29,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224237099] [2021-10-13 07:47:29,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:47:29,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:47:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:47:29,890 INFO L87 Difference]: Start difference. First operand 4546 states and 5927 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:47:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:30,059 INFO L93 Difference]: Finished difference Result 8807 states and 11513 transitions. [2021-10-13 07:47:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:47:30,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2021-10-13 07:47:30,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:30,067 INFO L225 Difference]: With dead ends: 8807 [2021-10-13 07:47:30,067 INFO L226 Difference]: Without dead ends: 4282 [2021-10-13 07:47:30,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 701 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 07:47:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2021-10-13 07:47:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 3897. [2021-10-13 07:47:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3896 states have (on average 1.2546201232032854) internal successors, (4888), 3896 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states 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 07:47:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4888 transitions. [2021-10-13 07:47:30,231 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4888 transitions. Word has length 352 [2021-10-13 07:47:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:30,232 INFO L470 AbstractCegarLoop]: Abstraction has 3897 states and 4888 transitions. [2021-10-13 07:47:30,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:47:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4888 transitions. [2021-10-13 07:47:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-10-13 07:47:30,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:47:30,240 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 8, 8, 8, 8, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:30,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 07:47:30,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:47:30,460 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:47:30,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:47:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1769991755, now seen corresponding path program 1 times [2021-10-13 07:47:30,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:47:30,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767895337] [2021-10-13 07:47:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:30,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:47:30,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:47:30,462 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:47:30,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 07:47:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:33,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:47:33,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:47:33,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:47:34,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:47:34,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767895337] [2021-10-13 07:47:34,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767895337] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:47:34,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1235834898] [2021-10-13 07:47:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:34,573 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:47:34,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:47:34,574 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:47:34,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-13 07:47:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:38,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:47:38,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:47:39,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:47:40,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1235834898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:47:40,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143177880] [2021-10-13 07:47:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:47:40,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:47:40,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:47:40,279 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:47:40,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 07:47:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:47:44,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:47:44,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:47:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:47:45,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:47:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:47:46,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143177880] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:47:46,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:47:46,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:47:46,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429788619] [2021-10-13 07:47:46,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:47:46,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:47:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:47:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:47:46,169 INFO L87 Difference]: Start difference. First operand 3897 states and 4888 transitions. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 07:47:46,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:47:46,590 INFO L93 Difference]: Finished difference Result 5857 states and 7298 transitions. [2021-10-13 07:47:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:47:46,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 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 422 [2021-10-13 07:47:46,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:47:46,591 INFO L225 Difference]: With dead ends: 5857 [2021-10-13 07:47:46,592 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:47:46,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2532 GetRequests, 2525 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:47:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:47:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:47:46,596 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 07:47:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:47:46,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 422 [2021-10-13 07:47:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:47:46,597 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:47:46,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 07:47:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:47:46,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:47:46,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:47:46,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-13 07:47:46,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-13 07:47:47,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-10-13 07:47:47,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:47:47,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:47:47,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:47,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:48,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:49,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:47:55,785 INFO L857 garLoopResultBuilder]: For program point L597(lines 597 613) no Hoare annotation was computed. [2021-10-13 07:47:55,785 INFO L857 garLoopResultBuilder]: For program point L598(lines 598 612) no Hoare annotation was computed. [2021-10-13 07:47:55,785 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 375) no Hoare annotation was computed. [2021-10-13 07:47:55,785 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 563) no Hoare annotation was computed. [2021-10-13 07:47:55,785 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 574) no Hoare annotation was computed. [2021-10-13 07:47:55,786 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 585) no Hoare annotation was computed. [2021-10-13 07:47:55,786 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 596) no Hoare annotation was computed. [2021-10-13 07:47:55,786 INFO L857 garLoopResultBuilder]: For program point L599(lines 599 604) no Hoare annotation was computed. [2021-10-13 07:47:55,786 INFO L857 garLoopResultBuilder]: For program point L599-2(lines 598 612) no Hoare annotation was computed. [2021-10-13 07:47:55,786 INFO L857 garLoopResultBuilder]: For program point L467(lines 467 469) no Hoare annotation was computed. [2021-10-13 07:47:55,787 INFO L853 garLoopResultBuilder]: At program point L203(lines 199 564) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32))) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 .cse3) (and .cse0 .cse1 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2 (not .cse3)))) [2021-10-13 07:47:55,787 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 596) the Hoare annotation is: false [2021-10-13 07:47:55,787 INFO L857 garLoopResultBuilder]: For program point L501(lines 501 504) no Hoare annotation was computed. [2021-10-13 07:47:55,787 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 603) no Hoare annotation was computed. [2021-10-13 07:47:55,787 INFO L857 garLoopResultBuilder]: For program point L436-1(lines 436 444) no Hoare annotation was computed. [2021-10-13 07:47:55,787 INFO L857 garLoopResultBuilder]: For program point L337(lines 337 374) no Hoare annotation was computed. [2021-10-13 07:47:55,787 INFO L857 garLoopResultBuilder]: For program point L337-1(lines 337 374) no Hoare annotation was computed. [2021-10-13 07:47:55,787 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 562) no Hoare annotation was computed. [2021-10-13 07:47:55,788 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 573) no Hoare annotation was computed. [2021-10-13 07:47:55,788 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 584) no Hoare annotation was computed. [2021-10-13 07:47:55,788 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 595) no Hoare annotation was computed. [2021-10-13 07:47:55,788 INFO L853 garLoopResultBuilder]: At program point L404(lines 395 416) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:47:55,788 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 371) no Hoare annotation was computed. [2021-10-13 07:47:55,788 INFO L857 garLoopResultBuilder]: For program point L305(lines 305 315) no Hoare annotation was computed. [2021-10-13 07:47:55,788 INFO L857 garLoopResultBuilder]: For program point L305-2(lines 305 315) no Hoare annotation was computed. [2021-10-13 07:47:55,789 INFO L860 garLoopResultBuilder]: At program point L206(lines 205 562) the Hoare annotation is: true [2021-10-13 07:47:55,789 INFO L853 garLoopResultBuilder]: At program point L173(lines 169 574) the Hoare annotation is: (let ((.cse4 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:47:55,789 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 585) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse2 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse3) (and .cse0 .cse1 .cse2 .cse3 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse4))) [2021-10-13 07:47:55,789 INFO L857 garLoopResultBuilder]: For program point L537(lines 537 541) no Hoare annotation was computed. [2021-10-13 07:47:55,789 INFO L857 garLoopResultBuilder]: For program point L537-2(lines 537 541) no Hoare annotation was computed. [2021-10-13 07:47:55,789 INFO L857 garLoopResultBuilder]: For program point L439(lines 439 442) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L860 garLoopResultBuilder]: At program point L208(lines 207 562) the Hoare annotation is: true [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 572) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 583) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 594) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L860 garLoopResultBuilder]: At program point L638(lines 629 640) the Hoare annotation is: true [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L506(lines 506 516) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L407(lines 407 409) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 277) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L275-2(lines 209 559) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L606(lines 606 610) no Hoare annotation was computed. [2021-10-13 07:47:55,790 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 311) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L309-2(lines 307 315) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 369) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 254) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 571) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 582) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 593) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L509(lines 509 515) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L476(lines 476 478) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L410(lines 410 412) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 248) no Hoare annotation was computed. [2021-10-13 07:47:55,791 INFO L853 garLoopResultBuilder]: At program point L212(lines 106 595) the Hoare annotation is: false [2021-10-13 07:47:55,792 INFO L853 garLoopResultBuilder]: At program point L179(lines 175 572) the Hoare annotation is: (let ((.cse4 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:47:55,792 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 583) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse4 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:47:55,792 INFO L857 garLoopResultBuilder]: For program point L346(lines 346 350) no Hoare annotation was computed. [2021-10-13 07:47:55,792 INFO L857 garLoopResultBuilder]: For program point L346-2(lines 346 350) no Hoare annotation was computed. [2021-10-13 07:47:55,792 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 570) no Hoare annotation was computed. [2021-10-13 07:47:55,793 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 581) no Hoare annotation was computed. [2021-10-13 07:47:55,793 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 592) no Hoare annotation was computed. [2021-10-13 07:47:55,793 INFO L857 garLoopResultBuilder]: For program point L512(lines 512 514) no Hoare annotation was computed. [2021-10-13 07:47:55,793 INFO L857 garLoopResultBuilder]: For program point L512-2(lines 209 559) no Hoare annotation was computed. [2021-10-13 07:47:55,793 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:47:55,793 INFO L857 garLoopResultBuilder]: For program point L547(lines 547 553) no Hoare annotation was computed. [2021-10-13 07:47:55,794 INFO L857 garLoopResultBuilder]: For program point L547-1(lines 547 553) no Hoare annotation was computed. [2021-10-13 07:47:55,794 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:47:55,794 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 569) no Hoare annotation was computed. [2021-10-13 07:47:55,794 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 580) no Hoare annotation was computed. [2021-10-13 07:47:55,794 INFO L857 garLoopResultBuilder]: For program point L217-2(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:47:55,794 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 591) no Hoare annotation was computed. [2021-10-13 07:47:55,795 INFO L857 garLoopResultBuilder]: For program point L383(lines 383 418) no Hoare annotation was computed. [2021-10-13 07:47:55,795 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:47:55,795 INFO L853 garLoopResultBuilder]: At program point L185(lines 181 570) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse2 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0)) .cse0 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:47:55,795 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 581) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:47:55,795 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 88) no Hoare annotation was computed. [2021-10-13 07:47:55,796 INFO L857 garLoopResultBuilder]: For program point L86-2(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:47:55,796 INFO L857 garLoopResultBuilder]: For program point L450(lines 450 452) no Hoare annotation was computed. [2021-10-13 07:47:55,796 INFO L857 garLoopResultBuilder]: For program point L384(lines 384 390) no Hoare annotation was computed. [2021-10-13 07:47:55,796 INFO L860 garLoopResultBuilder]: At program point L616(lines 99 617) the Hoare annotation is: true [2021-10-13 07:47:55,796 INFO L857 garLoopResultBuilder]: For program point L550(lines 550 552) no Hoare annotation was computed. [2021-10-13 07:47:55,797 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 568) no Hoare annotation was computed. [2021-10-13 07:47:55,797 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 579) no Hoare annotation was computed. [2021-10-13 07:47:55,797 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 590) no Hoare annotation was computed. [2021-10-13 07:47:55,797 INFO L857 garLoopResultBuilder]: For program point L485(lines 485 487) no Hoare annotation was computed. [2021-10-13 07:47:55,797 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 591) the Hoare annotation is: false [2021-10-13 07:47:55,797 INFO L853 garLoopResultBuilder]: At program point L486(lines 73 627) the Hoare annotation is: false [2021-10-13 07:47:55,798 INFO L857 garLoopResultBuilder]: For program point L453(lines 453 462) no Hoare annotation was computed. [2021-10-13 07:47:55,798 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 365) no Hoare annotation was computed. [2021-10-13 07:47:55,798 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 290) no Hoare annotation was computed. [2021-10-13 07:47:55,798 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:47:55,798 INFO L857 garLoopResultBuilder]: For program point L288-2(lines 209 559) no Hoare annotation was computed. [2021-10-13 07:47:55,798 INFO L853 garLoopResultBuilder]: At program point L355(lines 331 376) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:47:55,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:47:55,799 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 567) no Hoare annotation was computed. [2021-10-13 07:47:55,799 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 578) no Hoare annotation was computed. [2021-10-13 07:47:55,799 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 589) no Hoare annotation was computed. [2021-10-13 07:47:55,799 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-13 07:47:55,799 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 73 627) no Hoare annotation was computed. [2021-10-13 07:47:55,800 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 490) no Hoare annotation was computed. [2021-10-13 07:47:55,800 INFO L853 garLoopResultBuilder]: At program point L191(lines 187 568) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not .cse3)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse4 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:47:55,800 INFO L853 garLoopResultBuilder]: At program point L158(lines 154 579) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:47:55,800 INFO L853 garLoopResultBuilder]: At program point L125(lines 124 589) the Hoare annotation is: (and (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 94) no Hoare annotation was computed. [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L621(lines 621 623) no Hoare annotation was computed. [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L621-2(lines 621 623) no Hoare annotation was computed. [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 525) no Hoare annotation was computed. [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 359) no Hoare annotation was computed. [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L357-2(lines 354 363) no Hoare annotation was computed. [2021-10-13 07:47:55,801 INFO L857 garLoopResultBuilder]: For program point L457(lines 457 459) no Hoare annotation was computed. [2021-10-13 07:47:55,802 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 329) no Hoare annotation was computed. [2021-10-13 07:47:55,802 INFO L857 garLoopResultBuilder]: For program point L325-2(lines 209 559) no Hoare annotation was computed. [2021-10-13 07:47:55,802 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 566) no Hoare annotation was computed. [2021-10-13 07:47:55,802 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 577) no Hoare annotation was computed. [2021-10-13 07:47:55,802 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 588) no Hoare annotation was computed. [2021-10-13 07:47:55,802 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:47:55,803 INFO L857 garLoopResultBuilder]: For program point L491(lines 491 495) no Hoare annotation was computed. [2021-10-13 07:47:55,803 INFO L857 garLoopResultBuilder]: For program point L491-2(lines 491 495) no Hoare annotation was computed. [2021-10-13 07:47:55,803 INFO L853 garLoopResultBuilder]: At program point L392(lines 383 418) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:47:55,803 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 262) no Hoare annotation was computed. [2021-10-13 07:47:55,803 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 238) no Hoare annotation was computed. [2021-10-13 07:47:55,803 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 209 559) no Hoare annotation was computed. [2021-10-13 07:47:55,804 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 298) no Hoare annotation was computed. [2021-10-13 07:47:55,804 INFO L857 garLoopResultBuilder]: For program point L294-2(lines 294 298) no Hoare annotation was computed. [2021-10-13 07:47:55,804 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 232) no Hoare annotation was computed. [2021-10-13 07:47:55,804 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 565) no Hoare annotation was computed. [2021-10-13 07:47:55,804 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 576) no Hoare annotation was computed. [2021-10-13 07:47:55,805 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 587) no Hoare annotation was computed. [2021-10-13 07:47:55,805 INFO L860 garLoopResultBuilder]: At program point L626(lines 12 628) the Hoare annotation is: true [2021-10-13 07:47:55,805 INFO L853 garLoopResultBuilder]: At program point L560(lines 100 615) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse6 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32)))) (.cse10 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse19 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse18 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse16 (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse15 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse17 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse5 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse20 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse22 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse21 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse14 (not .cse2)) (.cse13 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse23 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse2) (and .cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7 .cse2) (and .cse8 .cse2 .cse9) (and .cse10 .cse6 .cse0 .cse2) (and .cse11 .cse12 .cse5 .cse2) (and .cse13 .cse2 .cse3) (and .cse11 .cse7 .cse5 .cse2) (and .cse10 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse14) (and .cse15 .cse0 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse3) (and .cse16 .cse5 .cse2) (and .cse11 .cse2 .cse17 .cse9) (and .cse0 .cse5 .cse2 .cse18) (and .cse13 .cse5 .cse2) (and .cse19 .cse20 .cse21) (and .cse4 .cse0 .cse9) (and .cse4 .cse14 .cse9) (and .cse0 .cse16 .cse2 .cse3) (and .cse11 .cse7 .cse2 .cse9) (and .cse19 .cse2) (and .cse11 .cse2 .cse18 .cse3) (and .cse15 .cse0 .cse2 .cse9) (and .cse11 .cse2 .cse18 .cse9) (and .cse11 .cse7 .cse2 .cse3) (and .cse0 .cse8 .cse5 .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse11 .cse12 .cse2 .cse9) (and .cse0 .cse5 .cse2 .cse17) (and .cse20 .cse7 .cse21 .cse14) (and .cse11 .cse12 .cse2 .cse3) (and .cse16 .cse2 .cse9) (and .cse0 .cse22 .cse2 .cse9) (and .cse0 .cse8 .cse2 .cse3) (and .cse23 .cse2 .cse3) (and .cse23 .cse5 .cse2) (and .cse15 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 .cse22 .cse2 .cse3) (and .cse15 .cse0 .cse5 .cse2) (and .cse0 .cse1 .cse2 .cse9) (and .cse11 .cse2 .cse17 .cse3) (and .cse0 .cse22 .cse5 .cse2) (and .cse20 .cse22 .cse21 .cse14) (and .cse13 .cse2 .cse9) (and .cse23 .cse2 .cse9)))) [2021-10-13 07:47:55,805 INFO L857 garLoopResultBuilder]: For program point L428(lines 428 430) no Hoare annotation was computed. [2021-10-13 07:47:55,806 INFO L857 garLoopResultBuilder]: For program point L395(lines 395 416) no Hoare annotation was computed. [2021-10-13 07:47:55,806 INFO L853 garLoopResultBuilder]: At program point L197(lines 193 566) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse2 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and .cse0 .cse2 (not .cse3) .cse4) (and .cse0 .cse1 .cse2 .cse4))) [2021-10-13 07:47:55,806 INFO L853 garLoopResultBuilder]: At program point L164(lines 160 577) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:47:55,806 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:47:55,807 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 625) no Hoare annotation was computed. [2021-10-13 07:47:55,807 INFO L857 garLoopResultBuilder]: For program point L396(lines 396 402) no Hoare annotation was computed. [2021-10-13 07:47:55,807 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 564) no Hoare annotation was computed. [2021-10-13 07:47:55,807 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 575) no Hoare annotation was computed. [2021-10-13 07:47:55,807 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 586) no Hoare annotation was computed. [2021-10-13 07:47:55,808 INFO L853 garLoopResultBuilder]: At program point L100-2(lines 100 615) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse6 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32)))) (.cse10 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse19 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse18 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse16 (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse15 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse17 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse5 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse20 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse22 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse21 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse14 (not .cse2)) (.cse13 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse23 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse2) (and .cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7 .cse2) (and .cse8 .cse2 .cse9) (and .cse10 .cse6 .cse0 .cse2) (and .cse11 .cse12 .cse5 .cse2) (and .cse13 .cse2 .cse3) (and .cse11 .cse7 .cse5 .cse2) (and .cse10 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse14) (and .cse15 .cse0 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse3) (and .cse16 .cse5 .cse2) (and .cse11 .cse2 .cse17 .cse9) (and .cse0 .cse5 .cse2 .cse18) (and .cse13 .cse5 .cse2) (and .cse19 .cse20 .cse21) (and .cse4 .cse0 .cse9) (and .cse4 .cse14 .cse9) (and .cse0 .cse16 .cse2 .cse3) (and .cse11 .cse7 .cse2 .cse9) (and .cse19 .cse2) (and .cse11 .cse2 .cse18 .cse3) (and .cse15 .cse0 .cse2 .cse9) (and .cse11 .cse2 .cse18 .cse9) (and .cse11 .cse7 .cse2 .cse3) (and .cse0 .cse8 .cse5 .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse11 .cse12 .cse2 .cse9) (and .cse0 .cse5 .cse2 .cse17) (and .cse20 .cse7 .cse21 .cse14) (and .cse11 .cse12 .cse2 .cse3) (and .cse16 .cse2 .cse9) (and .cse0 .cse22 .cse2 .cse9) (and .cse0 .cse8 .cse2 .cse3) (and .cse23 .cse2 .cse3) (and .cse23 .cse5 .cse2) (and .cse15 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 .cse22 .cse2 .cse3) (and .cse15 .cse0 .cse5 .cse2) (and .cse0 .cse1 .cse2 .cse9) (and .cse11 .cse2 .cse17 .cse3) (and .cse0 .cse22 .cse5 .cse2) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and .cse20 .cse22 .cse21 .cse14) (and .cse13 .cse2 .cse9) (and .cse23 .cse2 .cse9)))) [2021-10-13 07:47:55,808 INFO L857 garLoopResultBuilder]: For program point L530(lines 530 532) no Hoare annotation was computed. [2021-10-13 07:47:55,808 INFO L857 garLoopResultBuilder]: For program point L530-2(lines 209 559) no Hoare annotation was computed. [2021-10-13 07:47:55,808 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 236) no Hoare annotation was computed. [2021-10-13 07:47:55,809 INFO L853 garLoopResultBuilder]: At program point L167(lines 166 575) the Hoare annotation is: (let ((.cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32))) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1) (and .cse2 .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse2 .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not .cse1)))) [2021-10-13 07:47:55,809 INFO L853 garLoopResultBuilder]: At program point L134(lines 127 588) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 .cse3 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse4) (and .cse0 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse3))) [2021-10-13 07:47:55,809 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:47:55,814 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:47:55,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:47:55 BoogieIcfgContainer [2021-10-13 07:47:55,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:47:55,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:47:55,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:47:55,865 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:47:55,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:05" (3/4) ... [2021-10-13 07:47:55,869 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:47:55,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:47:55,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:47:55,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:47:55,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:47:56,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:47:56,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:47:56,008 INFO L168 Benchmark]: Toolchain (without parser) took 112430.56 ms. Allocated memory was 50.3 MB in the beginning and 799.0 MB in the end (delta: 748.7 MB). Free memory was 26.0 MB in the beginning and 428.1 MB in the end (delta: -402.2 MB). Peak memory consumption was 347.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,008 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 30.1 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:47:56,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.78 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.8 MB in the beginning and 48.3 MB in the end (delta: -22.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.25 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 45.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,010 INFO L168 Benchmark]: Boogie Preprocessor took 74.46 ms. Allocated memory is still 69.2 MB. Free memory was 45.5 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,010 INFO L168 Benchmark]: RCFGBuilder took 1203.54 ms. Allocated memory is still 69.2 MB. Free memory was 43.4 MB in the beginning and 31.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,011 INFO L168 Benchmark]: TraceAbstraction took 110268.30 ms. Allocated memory was 69.2 MB in the beginning and 799.0 MB in the end (delta: 729.8 MB). Free memory was 30.8 MB in the beginning and 439.7 MB in the end (delta: -408.9 MB). Peak memory consumption was 579.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,011 INFO L168 Benchmark]: Witness Printer took 141.39 ms. Allocated memory is still 799.0 MB. Free memory was 439.7 MB in the beginning and 428.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:47:56,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 30.1 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.78 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.8 MB in the beginning and 48.3 MB in the end (delta: -22.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.25 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 45.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.46 ms. Allocated memory is still 69.2 MB. Free memory was 45.5 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1203.54 ms. Allocated memory is still 69.2 MB. Free memory was 43.4 MB in the beginning and 31.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 110268.30 ms. Allocated memory was 69.2 MB in the beginning and 799.0 MB in the end (delta: 729.8 MB). Free memory was 30.8 MB in the beginning and 439.7 MB in the end (delta: -408.9 MB). Peak memory consumption was 579.9 MB. Max. memory is 16.1 GB. * Witness Printer took 141.39 ms. Allocated memory is still 799.0 MB. Free memory was 439.7 MB in the beginning and 428.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 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: 625]: 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, 146 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 110122.8ms, OverallIterations: 27, TraceHistogramMax: 14, EmptinessCheckTime: 181.5ms, AutomataDifference: 7362.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 8561.7ms, InitialAbstractionConstructionTime: 25.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6972 SDtfs, 3387 SDslu, 5911 SDs, 0 SdLazy, 2975 SolverSat, 642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2938.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14908 GetRequests, 14861 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 174.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8885occurred in iteration=24, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3347.8ms AutomataMinimizationTime, 27 MinimizatonAttempts, 8821 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 273 NumberOfFragments, 2137 HoareAnnotationTreeSize, 28 FomulaSimplifications, 49131 FormulaSimplificationTreeSizeReduction, 2226.7ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 11978 FormulaSimplificationTreeSizeReductionInter, 6315.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 581.7ms SsaConstructionTime, 2491.4ms SatisfiabilityAnalysisTime, 34864.4ms InterpolantComputationTime, 7483 NumberOfCodeBlocks, 7483 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 14898 ConstructedInterpolants, 0 QuantifiedInterpolants, 21655 SizeOfPredicates, 13 NumberOfNonLiveVariables, 9170 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 68 InterpolantComputations, 48 PerfectInterpolantSequences, 41340/41836 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: 629]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 331]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32) || ((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: (((((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && 4bv32 == blastFlag) && !(8656bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 383]: Loop Invariant Derived loop invariant: (((!(8656bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: (((!(8656bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 395]: Loop Invariant Derived loop invariant: (((!(8656bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: ((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: (((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && blastFlag == 0bv32) && !(8656bv32 == s__state)) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((((!(blastFlag == 5bv32) && 3bv32 == s__s3__tmp__next_state___0) && 8448bv32 == s__state) && s__hit == 0bv32) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((4bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(blastFlag == 5bv32) && 3bv32 == s__s3__tmp__next_state___0) && 8448bv32 == s__state) && s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8672bv32 == s__state && !(blastFlag == 5bv32)) && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8560bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8608bv32 == s__state)) || ((8560bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((3bv32 == s__state && 4bv32 == blastFlag) && s__s3__tmp__next_state___0 == 8640bv32)) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8528bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (3bv32 == s__state && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8592bv32 == s__state)) || (((4bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((4bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: (((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && blastFlag == 1bv32) && !(8656bv32 == s__state))) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: (((((!(blastFlag == 5bv32) && !(8545bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && 3bv32 == blastFlag) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && s__hit == 0bv32) && 8608bv32 == s__state) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag) - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(blastFlag == 5bv32) && 3bv32 == s__s3__tmp__next_state___0) && 8448bv32 == s__state) && s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8672bv32 == s__state && !(blastFlag == 5bv32)) && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8560bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8608bv32 == s__state)) || ((8560bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((3bv32 == s__state && 4bv32 == blastFlag) && s__s3__tmp__next_state___0 == 8640bv32)) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8528bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (3bv32 == s__state && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8592bv32 == s__state)) || (((4bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (8464bv32 == s__state && blastFlag == 0bv32)) || (((4bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:47:56,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d79fc51a-5da1-4673-8753-aed89e89610e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...