./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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 b4872de39e95e4bc5ccbeb0f1761dba68e05980d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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 b4872de39e95e4bc5ccbeb0f1761dba68e05980d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:11:12,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:11:12,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:11:12,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:11:12,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:11:12,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:11:12,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:11:12,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:11:12,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:11:12,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:11:12,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:11:12,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:11:12,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:11:12,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:11:12,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:11:12,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:11:12,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:11:12,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:11:12,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:11:12,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:11:12,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:11:12,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:11:12,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:11:12,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:11:12,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:11:12,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:11:12,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:11:12,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:11:12,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:11:12,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:11:12,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:11:12,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:11:12,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:11:12,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:11:12,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:11:12,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:11:12,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:11:12,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:11:12,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:11:12,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:11:12,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:11:12,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:11:12,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:11:12,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:11:12,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:11:12,580 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:11:12,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:11:12,580 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:11:12,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:11:12,581 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:11:12,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:11:12,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:11:12,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:11:12,588 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:11:12,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:11:12,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:11:12,589 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:11:12,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:11:12,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:11:12,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:11:12,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:11:12,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:11:12,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:11:12,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:11:12,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:11:12,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:11:12,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:11:12,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:11:12,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:11:12,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:11:12,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:11:12,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:11:12,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:11:12,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:11:12,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:11:12,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:11:12,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:11:12,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:11:12,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:11:12,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:11:12,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:11:12,597 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4872de39e95e4bc5ccbeb0f1761dba68e05980d [2021-10-13 08:11:12,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:11:12,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:11:12,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:11:12,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:11:12,861 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:11:12,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c [2021-10-13 08:11:12,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/c96f38380/fe4cf8e5b30c46ad9b28018c3711e78b/FLAG389fcdcf5 [2021-10-13 08:11:13,414 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:11:13,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c [2021-10-13 08:11:13,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/c96f38380/fe4cf8e5b30c46ad9b28018c3711e78b/FLAG389fcdcf5 [2021-10-13 08:11:13,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/c96f38380/fe4cf8e5b30c46ad9b28018c3711e78b [2021-10-13 08:11:13,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:11:13,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:11:13,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:11:13,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:11:13,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:11:13,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:13" (1/1) ... [2021-10-13 08:11:13,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562ffea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:13, skipping insertion in model container [2021-10-13 08:11:13,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:13" (1/1) ... [2021-10-13 08:11:13,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:11:13,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:11:14,033 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c[35349,35362] [2021-10-13 08:11:14,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:11:14,048 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:11:14,106 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c[35349,35362] [2021-10-13 08:11:14,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:11:14,122 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:11:14,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14 WrapperNode [2021-10-13 08:11:14,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:11:14,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:11:14,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:11:14,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:11:14,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:11:14,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:11:14,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:11:14,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:11:14,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:11:14,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:11:14,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:11:14,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:11:14,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (1/1) ... [2021-10-13 08:11:14,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:11:14,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:14,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:11:14,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:11:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:11:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:11:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:11:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:11:14,437 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:11:14,907 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 08:11:14,907 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 08:11:15,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:11:15,365 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:11:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:15 BoogieIcfgContainer [2021-10-13 08:11:15,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:11:15,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:11:15,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:11:15,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:11:15,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:13" (1/3) ... [2021-10-13 08:11:15,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65432617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:15, skipping insertion in model container [2021-10-13 08:11:15,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:14" (2/3) ... [2021-10-13 08:11:15,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65432617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:15, skipping insertion in model container [2021-10-13 08:11:15,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:15" (3/3) ... [2021-10-13 08:11:15,376 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-2.c [2021-10-13 08:11:15,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:11:15,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:11:15,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:11:15,453 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 08:11:15,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:11:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 84 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 08:11:15,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:15,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:15,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:15,482 INFO L82 PathProgramCache]: Analyzing trace with hash 304383498, now seen corresponding path program 1 times [2021-10-13 08:11:15,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:15,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645561094] [2021-10-13 08:11:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:15,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:15,709 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 08:11:15,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:15,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645561094] [2021-10-13 08:11:15,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645561094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:15,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:15,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:11:15,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899729288] [2021-10-13 08:11:15,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:15,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:15,743 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 84 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:15,915 INFO L93 Difference]: Finished difference Result 171 states and 295 transitions. [2021-10-13 08:11:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 08:11:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:15,929 INFO L225 Difference]: With dead ends: 171 [2021-10-13 08:11:15,929 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 08:11:15,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 08:11:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-13 08:11:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2021-10-13 08:11:15,981 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 19 [2021-10-13 08:11:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:15,981 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2021-10-13 08:11:15,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2021-10-13 08:11:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:11:15,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:15,986 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:15,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:11:15,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:15,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1735612385, now seen corresponding path program 1 times [2021-10-13 08:11:15,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:15,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000325407] [2021-10-13 08:11:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:15,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:16,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:16,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000325407] [2021-10-13 08:11:16,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000325407] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:16,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:16,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:11:16,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258255395] [2021-10-13 08:11:16,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:16,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:16,082 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:16,186 INFO L93 Difference]: Finished difference Result 180 states and 263 transitions. [2021-10-13 08:11:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 08:11:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:16,188 INFO L225 Difference]: With dead ends: 180 [2021-10-13 08:11:16,188 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 08:11:16,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 08:11:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 08:11:16,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-10-13 08:11:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 96 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2021-10-13 08:11:16,199 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 28 [2021-10-13 08:11:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:16,199 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2021-10-13 08:11:16,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2021-10-13 08:11:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 08:11:16,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:16,201 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:16,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:11:16,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 215299908, now seen corresponding path program 1 times [2021-10-13 08:11:16,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:16,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568857285] [2021-10-13 08:11:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:16,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:11:16,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:16,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568857285] [2021-10-13 08:11:16,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568857285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:16,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:16,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:11:16,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265520693] [2021-10-13 08:11:16,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:16,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:16,307 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:16,415 INFO L93 Difference]: Finished difference Result 208 states and 299 transitions. [2021-10-13 08:11:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 08:11:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:16,417 INFO L225 Difference]: With dead ends: 208 [2021-10-13 08:11:16,417 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 08:11:16,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 08:11:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-10-13 08:11:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 111 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 155 transitions. [2021-10-13 08:11:16,427 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 155 transitions. Word has length 39 [2021-10-13 08:11:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:16,427 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 155 transitions. [2021-10-13 08:11:16,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 155 transitions. [2021-10-13 08:11:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 08:11:16,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:16,430 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:16,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:11:16,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1290191216, now seen corresponding path program 1 times [2021-10-13 08:11:16,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:16,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829086613] [2021-10-13 08:11:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:16,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:11:16,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:16,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829086613] [2021-10-13 08:11:16,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829086613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:16,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915856779] [2021-10-13 08:11:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:16,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:16,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:16,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:11:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:16,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:11:16,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 08:11:17,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 08:11:17,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915856779] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:17,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 08:11:17,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-13 08:11:17,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045158391] [2021-10-13 08:11:17,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:11:17,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:11:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:11:17,274 INFO L87 Difference]: Start difference. First operand 112 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:17,611 INFO L93 Difference]: Finished difference Result 315 states and 470 transitions. [2021-10-13 08:11:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:11:17,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 08:11:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:17,618 INFO L225 Difference]: With dead ends: 315 [2021-10-13 08:11:17,618 INFO L226 Difference]: Without dead ends: 205 [2021-10-13 08:11:17,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:11:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-13 08:11:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2021-10-13 08:11:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3763440860215055) internal successors, (256), 186 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 256 transitions. [2021-10-13 08:11:17,643 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 256 transitions. Word has length 52 [2021-10-13 08:11:17,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:17,643 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 256 transitions. [2021-10-13 08:11:17,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 256 transitions. [2021-10-13 08:11:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 08:11:17,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:17,651 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:17,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:17,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-13 08:11:17,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash 443103374, now seen corresponding path program 1 times [2021-10-13 08:11:17,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:17,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874777749] [2021-10-13 08:11:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:17,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 08:11:17,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:17,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874777749] [2021-10-13 08:11:17,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874777749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:17,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:17,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:11:17,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404998287] [2021-10-13 08:11:17,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:17,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:17,998 INFO L87 Difference]: Start difference. First operand 187 states and 256 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 08:11:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:18,095 INFO L93 Difference]: Finished difference Result 392 states and 545 transitions. [2021-10-13 08:11:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:18,096 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 68 [2021-10-13 08:11:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:18,098 INFO L225 Difference]: With dead ends: 392 [2021-10-13 08:11:18,098 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 08:11:18,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 08:11:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2021-10-13 08:11:18,109 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 08:11:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2021-10-13 08:11:18,127 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 68 [2021-10-13 08:11:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:18,128 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2021-10-13 08:11:18,128 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 08:11:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2021-10-13 08:11:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 08:11:18,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:18,134 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:18,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:11:18,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -940326770, now seen corresponding path program 1 times [2021-10-13 08:11:18,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:18,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742791524] [2021-10-13 08:11:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:18,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 08:11:18,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:18,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742791524] [2021-10-13 08:11:18,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742791524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:18,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908244326] [2021-10-13 08:11:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:18,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:18,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:18,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:18,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 08:11:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:18,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:11:18,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-13 08:11:18,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-10-13 08:11:19,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908244326] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:19,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [437692479] [2021-10-13 08:11:19,069 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-10-13 08:11:19,069 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:11:19,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:11:19,079 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:11:19,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:11:19,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:11:19,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:11:19,238 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:11:19,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:11:19,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-13 08:11:19,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,417 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 08:11:19,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 08:11:19,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:11:19,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:11:19,429 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:11:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,530 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 08:11:19,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 08:11:19,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:11:19,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:11:19,539 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 08:11:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:19,615 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 08:11:19,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 08:11:19,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:11:19,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:11:19,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 08:11:19,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:19,805 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:11:19,865 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-13 08:11:19,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1062 [2021-10-13 08:11:19,896 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 08:11:19,897 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1128, output treesize:1062 [2021-10-13 08:11:19,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:20,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 08:11:20,126 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_21| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:11:20,130 INFO L168 Benchmark]: Toolchain (without parser) took 6355.97 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 72.8 MB in the beginning and 85.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:20,130 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 61.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:20,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.89 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 76.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:20,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 74.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:20,132 INFO L168 Benchmark]: Boogie Preprocessor took 46.10 ms. Allocated memory is still 107.0 MB. Free memory was 74.2 MB in the beginning and 72.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:20,132 INFO L168 Benchmark]: RCFGBuilder took 1129.65 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 72.1 MB in the beginning and 77.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:20,133 INFO L168 Benchmark]: TraceAbstraction took 4759.80 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 76.4 MB in the beginning and 85.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:20,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 61.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.89 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 76.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 74.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.10 ms. Allocated memory is still 107.0 MB. Free memory was 74.2 MB in the beginning and 72.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1129.65 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 72.1 MB in the beginning and 77.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4759.80 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 76.4 MB in the beginning and 85.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_21|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:11:20,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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 08:11:22,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:11:22,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:11:22,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:11:22,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:11:22,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:11:22,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:11:22,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:11:22,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:11:22,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:11:22,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:11:22,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:11:22,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:11:22,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:11:22,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:11:22,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:11:22,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:11:22,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:11:22,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:11:22,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:11:22,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:11:22,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:11:22,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:11:22,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:11:22,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:11:22,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:11:22,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:11:22,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:11:22,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:11:22,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:11:22,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:11:22,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:11:22,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:11:22,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:11:22,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:11:22,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:11:22,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:11:22,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:11:22,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:11:22,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:11:22,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:11:22,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:11:22,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:11:22,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:11:22,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:11:22,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:11:22,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:11:22,829 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:11:22,829 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:11:22,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:11:22,830 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:11:22,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:11:22,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:11:22,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:11:22,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:11:22,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:11:22,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:11:22,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:11:22,838 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:11:22,839 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:11:22,839 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:11:22,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:11:22,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:11:22,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:11:22,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:11:22,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:11:22,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:11:22,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:11:22,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:11:22,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:11:22,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:11:22,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:11:22,842 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:11:22,842 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:11:22,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:11:22,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:11:22,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:11:22,843 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4872de39e95e4bc5ccbeb0f1761dba68e05980d [2021-10-13 08:11:23,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:11:23,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:11:23,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:11:23,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:11:23,246 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:11:23,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c [2021-10-13 08:11:23,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/55c6cd614/b57707c449954607bdd90d91a36f51ab/FLAG9b7418fc6 [2021-10-13 08:11:23,951 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:11:23,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c [2021-10-13 08:11:23,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/55c6cd614/b57707c449954607bdd90d91a36f51ab/FLAG9b7418fc6 [2021-10-13 08:11:24,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/data/55c6cd614/b57707c449954607bdd90d91a36f51ab [2021-10-13 08:11:24,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:11:24,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:11:24,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:11:24,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:11:24,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:11:24,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f75bc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24, skipping insertion in model container [2021-10-13 08:11:24,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:11:24,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:11:24,502 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c[35349,35362] [2021-10-13 08:11:24,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:11:24,543 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:11:24,648 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_21e89dfd-85df-4e75-a9dc-66b9f6e26757/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c[35349,35362] [2021-10-13 08:11:24,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:11:24,678 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:11:24,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24 WrapperNode [2021-10-13 08:11:24,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:11:24,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:11:24,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:11:24,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:11:24,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:11:24,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:11:24,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:11:24,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:11:24,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:11:24,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:11:24,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:11:24,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:11:24,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (1/1) ... [2021-10-13 08:11:24,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:11:24,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:24,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:11:24,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:11:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:11:25,128 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:11:25,685 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 08:11:25,685 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 08:11:25,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:11:25,695 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:11:25,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:25 BoogieIcfgContainer [2021-10-13 08:11:25,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:11:25,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:11:25,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:11:25,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:11:25,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:24" (1/3) ... [2021-10-13 08:11:25,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b09a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:25, skipping insertion in model container [2021-10-13 08:11:25,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:24" (2/3) ... [2021-10-13 08:11:25,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b09a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:25, skipping insertion in model container [2021-10-13 08:11:25,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:25" (3/3) ... [2021-10-13 08:11:25,705 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-2.c [2021-10-13 08:11:25,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:11:25,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:11:25,766 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:11:25,772 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 08:11:25,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:11:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:11:25,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:25,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:25,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-10-13 08:11:25,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:25,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195566031] [2021-10-13 08:11:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:25,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:25,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:25,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:11:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:25,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:11:25,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:26,111 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 08:11:26,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:26,209 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 08:11:26,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:26,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195566031] [2021-10-13 08:11:26,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195566031] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:26,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:26,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:26,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549182531] [2021-10-13 08:11:26,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:26,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:26,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:26,240 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:26,460 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-10-13 08:11:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:26,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 08:11:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:26,483 INFO L225 Difference]: With dead ends: 252 [2021-10-13 08:11:26,484 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 08:11:26,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 08:11:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-13 08:11:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-10-13 08:11:26,555 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-10-13 08:11:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:26,555 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-10-13 08:11:26,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-10-13 08:11:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:11:26,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:26,560 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:26,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:26,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:26,771 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:26,772 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-10-13 08:11:26,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:26,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912228726] [2021-10-13 08:11:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:26,773 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:26,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:26,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:11:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:26,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:26,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:26,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:27,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:27,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912228726] [2021-10-13 08:11:27,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912228726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:27,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:27,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:27,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253369323] [2021-10-13 08:11:27,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:27,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:27,121 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:27,267 INFO L93 Difference]: Finished difference Result 239 states and 362 transitions. [2021-10-13 08:11:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:27,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 08:11:27,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:27,273 INFO L225 Difference]: With dead ends: 239 [2021-10-13 08:11:27,273 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 08:11:27,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 08:11:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2021-10-13 08:11:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-10-13 08:11:27,303 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-10-13 08:11:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:27,304 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-10-13 08:11:27,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-10-13 08:11:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 08:11:27,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:27,309 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:27,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:27,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:27,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash 684962052, now seen corresponding path program 1 times [2021-10-13 08:11:27,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:27,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369709649] [2021-10-13 08:11:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:27,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:27,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:27,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:11:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:27,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:27,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:27,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:27,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:27,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369709649] [2021-10-13 08:11:27,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369709649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:27,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:27,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:27,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255543161] [2021-10-13 08:11:27,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:27,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:27,978 INFO L87 Difference]: Start difference. First operand 130 states and 192 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 08:11:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:28,107 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2021-10-13 08:11:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 08:11:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:28,110 INFO L225 Difference]: With dead ends: 271 [2021-10-13 08:11:28,110 INFO L226 Difference]: Without dead ends: 151 [2021-10-13 08:11:28,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-13 08:11:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-10-13 08:11:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-10-13 08:11:28,128 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-10-13 08:11:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:28,128 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-10-13 08:11:28,129 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 08:11:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-10-13 08:11:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 08:11:28,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:28,135 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:28,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:28,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:28,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:28,349 INFO L82 PathProgramCache]: Analyzing trace with hash -184561774, now seen corresponding path program 1 times [2021-10-13 08:11:28,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:28,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763156630] [2021-10-13 08:11:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:28,350 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:28,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:28,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:28,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:11:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:28,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:28,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 08:11:28,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 08:11:28,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:28,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763156630] [2021-10-13 08:11:28,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763156630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:28,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:28,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:28,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127600983] [2021-10-13 08:11:28,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:28,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:28,866 INFO L87 Difference]: Start difference. First operand 147 states and 214 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 08:11:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:29,118 INFO L93 Difference]: Finished difference Result 355 states and 540 transitions. [2021-10-13 08:11:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 08:11:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:29,123 INFO L225 Difference]: With dead ends: 355 [2021-10-13 08:11:29,124 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 08:11:29,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 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 08:11:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 08:11:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2021-10-13 08:11:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.4354066985645932) internal successors, (300), 209 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 300 transitions. [2021-10-13 08:11:29,146 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 300 transitions. Word has length 68 [2021-10-13 08:11:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:29,147 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 300 transitions. [2021-10-13 08:11:29,147 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 08:11:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 300 transitions. [2021-10-13 08:11:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 08:11:29,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:29,150 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:29,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:29,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:29,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1565147003, now seen corresponding path program 1 times [2021-10-13 08:11:29,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:29,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503169649] [2021-10-13 08:11:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:29,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:29,363 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:29,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:11:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:29,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:29,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 08:11:29,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 08:11:29,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:29,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503169649] [2021-10-13 08:11:29,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503169649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:29,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:29,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:29,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584996724] [2021-10-13 08:11:29,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:29,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:29,885 INFO L87 Difference]: Start difference. First operand 210 states and 300 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:30,021 INFO L93 Difference]: Finished difference Result 434 states and 627 transitions. [2021-10-13 08:11:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 08:11:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:30,026 INFO L225 Difference]: With dead ends: 434 [2021-10-13 08:11:30,026 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 08:11:30,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 08:11:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2021-10-13 08:11:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4210526315789473) internal successors, (324), 228 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2021-10-13 08:11:30,042 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 69 [2021-10-13 08:11:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2021-10-13 08:11:30,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2021-10-13 08:11:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 08:11:30,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:30,048 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:30,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:30,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:30,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash -368257495, now seen corresponding path program 1 times [2021-10-13 08:11:30,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:30,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341173149] [2021-10-13 08:11:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:30,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:30,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:30,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:30,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:11:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:30,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:30,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 08:11:30,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 08:11:30,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:30,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341173149] [2021-10-13 08:11:30,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341173149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:30,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:30,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:30,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240073032] [2021-10-13 08:11:30,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:30,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:30,899 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 08:11:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:31,039 INFO L93 Difference]: Finished difference Result 472 states and 676 transitions. [2021-10-13 08:11:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:31,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 86 [2021-10-13 08:11:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:31,042 INFO L225 Difference]: With dead ends: 472 [2021-10-13 08:11:31,042 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 08:11:31,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 08:11:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2021-10-13 08:11:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.4056224899598393) internal successors, (350), 249 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 350 transitions. [2021-10-13 08:11:31,052 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 350 transitions. Word has length 86 [2021-10-13 08:11:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:31,053 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 350 transitions. [2021-10-13 08:11:31,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 08:11:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 350 transitions. [2021-10-13 08:11:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 08:11:31,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:31,055 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:31,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:31,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:31,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:31,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1725839848, now seen corresponding path program 1 times [2021-10-13 08:11:31,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:31,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51215390] [2021-10-13 08:11:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:31,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:31,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:31,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:11:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:31,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:31,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 08:11:31,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 08:11:32,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:32,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51215390] [2021-10-13 08:11:32,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51215390] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:32,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:32,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:32,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424134714] [2021-10-13 08:11:32,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:32,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:32,024 INFO L87 Difference]: Start difference. First operand 250 states and 350 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:32,076 INFO L93 Difference]: Finished difference Result 752 states and 1051 transitions. [2021-10-13 08:11:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:32,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 08:11:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:32,082 INFO L225 Difference]: With dead ends: 752 [2021-10-13 08:11:32,082 INFO L226 Difference]: Without dead ends: 512 [2021-10-13 08:11:32,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-13 08:11:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-13 08:11:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.385518590998043) internal successors, (708), 511 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 708 transitions. [2021-10-13 08:11:32,104 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 708 transitions. Word has length 105 [2021-10-13 08:11:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:32,105 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 708 transitions. [2021-10-13 08:11:32,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 708 transitions. [2021-10-13 08:11:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 08:11:32,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:32,111 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:32,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:32,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:32,323 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2023868700, now seen corresponding path program 1 times [2021-10-13 08:11:32,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:32,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855753049] [2021-10-13 08:11:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:32,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:32,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:32,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:32,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:11:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:32,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:32,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 08:11:32,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 08:11:33,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:33,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855753049] [2021-10-13 08:11:33,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855753049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:33,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:33,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:33,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376019434] [2021-10-13 08:11:33,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:33,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:33,106 INFO L87 Difference]: Start difference. First operand 512 states and 708 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 08:11:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:33,134 INFO L93 Difference]: Finished difference Result 1035 states and 1430 transitions. [2021-10-13 08:11:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:33,134 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 105 [2021-10-13 08:11:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:33,138 INFO L225 Difference]: With dead ends: 1035 [2021-10-13 08:11:33,138 INFO L226 Difference]: Without dead ends: 533 [2021-10-13 08:11:33,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 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 08:11:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-10-13 08:11:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2021-10-13 08:11:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.381578947368421) internal successors, (735), 532 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 735 transitions. [2021-10-13 08:11:33,158 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 735 transitions. Word has length 105 [2021-10-13 08:11:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:33,158 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 735 transitions. [2021-10-13 08:11:33,158 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 08:11:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 735 transitions. [2021-10-13 08:11:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 08:11:33,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:33,161 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:33,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:33,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:33,377 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash -944759694, now seen corresponding path program 1 times [2021-10-13 08:11:33,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:33,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220121180] [2021-10-13 08:11:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:33,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:33,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:33,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:33,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:11:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:33,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:33,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 08:11:33,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 08:11:34,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:34,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220121180] [2021-10-13 08:11:34,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220121180] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:34,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:34,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:11:34,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774021588] [2021-10-13 08:11:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:34,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:34,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:34,174 INFO L87 Difference]: Start difference. First operand 533 states and 735 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:34,200 INFO L93 Difference]: Finished difference Result 1083 states and 1491 transitions. [2021-10-13 08:11:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:34,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 08:11:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:34,208 INFO L225 Difference]: With dead ends: 1083 [2021-10-13 08:11:34,208 INFO L226 Difference]: Without dead ends: 560 [2021-10-13 08:11:34,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 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 08:11:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-13 08:11:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-10-13 08:11:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3756708407871199) internal successors, (769), 559 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 769 transitions. [2021-10-13 08:11:34,228 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 769 transitions. Word has length 106 [2021-10-13 08:11:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:34,229 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 769 transitions. [2021-10-13 08:11:34,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 769 transitions. [2021-10-13 08:11:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 08:11:34,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:34,231 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:34,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:34,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:34,443 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash 625791090, now seen corresponding path program 1 times [2021-10-13 08:11:34,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:34,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109548901] [2021-10-13 08:11:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:34,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:34,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:34,445 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:34,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:11:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:34,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:34,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 08:11:35,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 08:11:35,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:35,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109548901] [2021-10-13 08:11:35,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109548901] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:35,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:35,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:35,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119215251] [2021-10-13 08:11:35,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:35,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:35,256 INFO L87 Difference]: Start difference. First operand 560 states and 769 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:35,350 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2021-10-13 08:11:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:35,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-13 08:11:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:35,362 INFO L225 Difference]: With dead ends: 1539 [2021-10-13 08:11:35,362 INFO L226 Difference]: Without dead ends: 1016 [2021-10-13 08:11:35,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-13 08:11:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2021-10-13 08:11:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.3842364532019704) internal successors, (1405), 1015 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1405 transitions. [2021-10-13 08:11:35,400 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1405 transitions. Word has length 107 [2021-10-13 08:11:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:35,401 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1405 transitions. [2021-10-13 08:11:35,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1405 transitions. [2021-10-13 08:11:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-13 08:11:35,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:35,405 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 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] [2021-10-13 08:11:35,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:35,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:35,618 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:35,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1290635395, now seen corresponding path program 1 times [2021-10-13 08:11:35,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:35,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785860952] [2021-10-13 08:11:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:35,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:35,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:35,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:35,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 08:11:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:36,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-13 08:11:36,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-13 08:11:36,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:36,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785860952] [2021-10-13 08:11:36,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785860952] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:36,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:36,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:36,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582900726] [2021-10-13 08:11:36,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:36,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:36,732 INFO L87 Difference]: Start difference. First operand 1016 states and 1405 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:36,936 INFO L93 Difference]: Finished difference Result 2116 states and 2963 transitions. [2021-10-13 08:11:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-10-13 08:11:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:36,943 INFO L225 Difference]: With dead ends: 2116 [2021-10-13 08:11:36,944 INFO L226 Difference]: Without dead ends: 1137 [2021-10-13 08:11:36,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-10-13 08:11:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1108. [2021-10-13 08:11:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 1.3667570009033423) internal successors, (1513), 1107 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1513 transitions. [2021-10-13 08:11:36,984 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1513 transitions. Word has length 176 [2021-10-13 08:11:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:36,984 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 1513 transitions. [2021-10-13 08:11:36,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1513 transitions. [2021-10-13 08:11:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-10-13 08:11:36,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:36,989 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:37,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:37,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:37,202 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:37,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1688862134, now seen corresponding path program 1 times [2021-10-13 08:11:37,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:37,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659731741] [2021-10-13 08:11:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:37,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:37,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:37,205 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:37,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 08:11:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:37,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:37,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 08:11:38,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 08:11:38,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:38,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659731741] [2021-10-13 08:11:38,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659731741] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:38,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:38,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:38,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666830145] [2021-10-13 08:11:38,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:38,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:38,500 INFO L87 Difference]: Start difference. First operand 1108 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:38,715 INFO L93 Difference]: Finished difference Result 2282 states and 3146 transitions. [2021-10-13 08:11:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 198 [2021-10-13 08:11:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:38,722 INFO L225 Difference]: With dead ends: 2282 [2021-10-13 08:11:38,722 INFO L226 Difference]: Without dead ends: 1211 [2021-10-13 08:11:38,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-10-13 08:11:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1183. [2021-10-13 08:11:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.3527918781725887) internal successors, (1599), 1182 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1599 transitions. [2021-10-13 08:11:38,766 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1599 transitions. Word has length 198 [2021-10-13 08:11:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:38,767 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1599 transitions. [2021-10-13 08:11:38,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1599 transitions. [2021-10-13 08:11:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-10-13 08:11:38,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:38,772 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:11:38,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:38,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:38,985 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:38,986 INFO L82 PathProgramCache]: Analyzing trace with hash 455987487, now seen corresponding path program 1 times [2021-10-13 08:11:38,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:38,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354907666] [2021-10-13 08:11:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:38,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:38,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:38,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:38,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 08:11:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:39,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:39,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 08:11:40,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 08:11:40,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:40,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354907666] [2021-10-13 08:11:40,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354907666] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:40,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:40,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:40,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887599719] [2021-10-13 08:11:40,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:40,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:40,495 INFO L87 Difference]: Start difference. First operand 1183 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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 08:11:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:40,693 INFO L93 Difference]: Finished difference Result 2449 states and 3350 transitions. [2021-10-13 08:11:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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 234 [2021-10-13 08:11:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:40,701 INFO L225 Difference]: With dead ends: 2449 [2021-10-13 08:11:40,701 INFO L226 Difference]: Without dead ends: 1303 [2021-10-13 08:11:40,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-10-13 08:11:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1295. [2021-10-13 08:11:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 1.3346213292117466) internal successors, (1727), 1294 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1727 transitions. [2021-10-13 08:11:40,772 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1727 transitions. Word has length 234 [2021-10-13 08:11:40,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:40,773 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 1727 transitions. [2021-10-13 08:11:40,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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 08:11:40,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1727 transitions. [2021-10-13 08:11:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-10-13 08:11:40,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:40,779 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:40,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:40,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:40,992 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:40,992 INFO L82 PathProgramCache]: Analyzing trace with hash -501091517, now seen corresponding path program 1 times [2021-10-13 08:11:40,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:40,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3426511] [2021-10-13 08:11:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:40,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:40,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:40,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:40,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 08:11:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:41,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:41,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 489 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 08:11:42,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 489 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 08:11:42,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:42,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3426511] [2021-10-13 08:11:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3426511] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:42,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:42,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:42,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491778107] [2021-10-13 08:11:42,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:42,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:42,552 INFO L87 Difference]: Start difference. First operand 1295 states and 1727 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:42,803 INFO L93 Difference]: Finished difference Result 2725 states and 3682 transitions. [2021-10-13 08:11:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-10-13 08:11:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:42,811 INFO L225 Difference]: With dead ends: 2725 [2021-10-13 08:11:42,812 INFO L226 Difference]: Without dead ends: 1467 [2021-10-13 08:11:42,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2021-10-13 08:11:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1419. [2021-10-13 08:11:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.3166431593794077) internal successors, (1867), 1418 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1867 transitions. [2021-10-13 08:11:42,868 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1867 transitions. Word has length 234 [2021-10-13 08:11:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 1867 transitions. [2021-10-13 08:11:42,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1867 transitions. [2021-10-13 08:11:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-10-13 08:11:42,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:42,875 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:42,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:43,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:43,091 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash 232160640, now seen corresponding path program 1 times [2021-10-13 08:11:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:43,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958570781] [2021-10-13 08:11:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:43,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:43,094 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:43,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 08:11:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:43,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:43,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 08:11:44,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 08:11:44,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:44,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958570781] [2021-10-13 08:11:44,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958570781] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:44,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:44,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:44,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869576975] [2021-10-13 08:11:44,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:44,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:44,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:44,991 INFO L87 Difference]: Start difference. First operand 1419 states and 1867 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 08:11:45,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:45,095 INFO L93 Difference]: Finished difference Result 5445 states and 7184 transitions. [2021-10-13 08:11:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:45,095 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 265 [2021-10-13 08:11:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:45,116 INFO L225 Difference]: With dead ends: 5445 [2021-10-13 08:11:45,116 INFO L226 Difference]: Without dead ends: 4063 [2021-10-13 08:11:45,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2021-10-13 08:11:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4059. [2021-10-13 08:11:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 4058 states have (on average 1.318629866929522) internal successors, (5351), 4058 states have internal predecessors, (5351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 5351 transitions. [2021-10-13 08:11:45,307 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 5351 transitions. Word has length 265 [2021-10-13 08:11:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:45,308 INFO L470 AbstractCegarLoop]: Abstraction has 4059 states and 5351 transitions. [2021-10-13 08:11:45,308 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 08:11:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 5351 transitions. [2021-10-13 08:11:45,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-10-13 08:11:45,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:45,320 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:45,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:45,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:45,533 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash -391120962, now seen corresponding path program 1 times [2021-10-13 08:11:45,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:45,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000448984] [2021-10-13 08:11:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:45,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:45,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:45,535 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:45,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 08:11:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:46,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:46,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 577 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-10-13 08:11:46,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 577 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-10-13 08:11:47,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:47,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000448984] [2021-10-13 08:11:47,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000448984] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:47,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:47,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:47,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396290099] [2021-10-13 08:11:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:47,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:47,434 INFO L87 Difference]: Start difference. First operand 4059 states and 5351 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:47,745 INFO L93 Difference]: Finished difference Result 8645 states and 11554 transitions. [2021-10-13 08:11:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:47,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 265 [2021-10-13 08:11:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:47,771 INFO L225 Difference]: With dead ends: 8645 [2021-10-13 08:11:47,772 INFO L226 Difference]: Without dead ends: 4623 [2021-10-13 08:11:47,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2021-10-13 08:11:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4491. [2021-10-13 08:11:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 1.298663697104677) internal successors, (5831), 4490 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 5831 transitions. [2021-10-13 08:11:47,949 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 5831 transitions. Word has length 265 [2021-10-13 08:11:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:47,950 INFO L470 AbstractCegarLoop]: Abstraction has 4491 states and 5831 transitions. [2021-10-13 08:11:47,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 5831 transitions. [2021-10-13 08:11:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-10-13 08:11:47,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:47,963 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:47,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:48,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:48,178 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:48,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1579392902, now seen corresponding path program 1 times [2021-10-13 08:11:48,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:48,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185962717] [2021-10-13 08:11:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:48,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:48,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:48,180 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:48,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 08:11:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:49,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-10-13 08:11:49,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-10-13 08:11:50,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:50,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185962717] [2021-10-13 08:11:50,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185962717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:50,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:50,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:50,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985747670] [2021-10-13 08:11:50,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:50,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:50,144 INFO L87 Difference]: Start difference. First operand 4491 states and 5831 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 08:11:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:50,470 INFO L93 Difference]: Finished difference Result 9209 states and 11994 transitions. [2021-10-13 08:11:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:50,471 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 290 [2021-10-13 08:11:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:50,497 INFO L225 Difference]: With dead ends: 9209 [2021-10-13 08:11:50,497 INFO L226 Difference]: Without dead ends: 4755 [2021-10-13 08:11:50,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4755 states. [2021-10-13 08:11:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4755 to 4623. [2021-10-13 08:11:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4622 states have (on average 1.2918649935093034) internal successors, (5971), 4622 states have internal predecessors, (5971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 5971 transitions. [2021-10-13 08:11:50,708 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 5971 transitions. Word has length 290 [2021-10-13 08:11:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:50,709 INFO L470 AbstractCegarLoop]: Abstraction has 4623 states and 5971 transitions. [2021-10-13 08:11:50,709 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 08:11:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 5971 transitions. [2021-10-13 08:11:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-10-13 08:11:50,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:50,723 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 08:11:50,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:50,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:50,937 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash -344125888, now seen corresponding path program 1 times [2021-10-13 08:11:50,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:50,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589231195] [2021-10-13 08:11:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:50,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:50,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:50,939 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 08:11:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:52,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:11:52,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-10-13 08:11:52,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-10-13 08:11:53,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:53,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589231195] [2021-10-13 08:11:53,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589231195] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:53,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:53,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:11:53,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809418879] [2021-10-13 08:11:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:11:53,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:11:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:53,178 INFO L87 Difference]: Start difference. First operand 4623 states and 5971 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:53,475 INFO L93 Difference]: Finished difference Result 9785 states and 12806 transitions. [2021-10-13 08:11:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:11:53,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 302 [2021-10-13 08:11:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:53,520 INFO L225 Difference]: With dead ends: 9785 [2021-10-13 08:11:53,521 INFO L226 Difference]: Without dead ends: 5199 [2021-10-13 08:11:53,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:11:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2021-10-13 08:11:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 5067. [2021-10-13 08:11:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 5066 states have (on average 1.275759968416897) internal successors, (6463), 5066 states have internal predecessors, (6463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 6463 transitions. [2021-10-13 08:11:53,746 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 6463 transitions. Word has length 302 [2021-10-13 08:11:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:53,747 INFO L470 AbstractCegarLoop]: Abstraction has 5067 states and 6463 transitions. [2021-10-13 08:11:53,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 6463 transitions. [2021-10-13 08:11:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-10-13 08:11:53,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:53,759 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:53,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:53,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:53,975 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:11:53,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:53,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1354743787, now seen corresponding path program 1 times [2021-10-13 08:11:53,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:11:53,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003845807] [2021-10-13 08:11:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:53,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:11:53,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:11:53,978 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:11:54,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 08:11:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:55,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:11:55,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 08:11:55,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 08:11:56,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:56,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003845807] [2021-10-13 08:11:56,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003845807] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:56,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1040522010] [2021-10-13 08:11:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:56,647 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:11:56,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:11:56,657 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:11:56,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-13 08:11:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:11:58,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 08:11:59,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 08:11:59,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1040522010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:59,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425154058] [2021-10-13 08:11:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:59,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:59,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:59,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 08:12:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:01,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:12:01,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 08:12:02,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 08:12:03,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425154058] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:03,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:12:03,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 08:12:03,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124092120] [2021-10-13 08:12:03,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:12:03,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:12:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:12:03,175 INFO L87 Difference]: Start difference. First operand 5067 states and 6463 transitions. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:03,952 INFO L93 Difference]: Finished difference Result 16420 states and 20930 transitions. [2021-10-13 08:12:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:12:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 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 361 [2021-10-13 08:12:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:03,976 INFO L225 Difference]: With dead ends: 16420 [2021-10-13 08:12:03,977 INFO L226 Difference]: Without dead ends: 11390 [2021-10-13 08:12:03,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2168 GetRequests, 2160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:12:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11390 states. [2021-10-13 08:12:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11390 to 6379. [2021-10-13 08:12:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 6378 states have (on average 1.297428661022264) internal successors, (8275), 6378 states have internal predecessors, (8275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 8275 transitions. [2021-10-13 08:12:04,248 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 8275 transitions. Word has length 361 [2021-10-13 08:12:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:04,249 INFO L470 AbstractCegarLoop]: Abstraction has 6379 states and 8275 transitions. [2021-10-13 08:12:04,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 8275 transitions. [2021-10-13 08:12:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-10-13 08:12:04,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:04,263 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:04,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:04,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:04,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:04,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:04,883 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1246228626, now seen corresponding path program 1 times [2021-10-13 08:12:04,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:04,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009917802] [2021-10-13 08:12:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:04,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:04,885 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:04,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 08:12:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:06,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:12:06,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1576 backedges. 987 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-10-13 08:12:07,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1576 backedges. 987 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-10-13 08:12:08,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:08,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009917802] [2021-10-13 08:12:08,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009917802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:08,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:08,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:12:08,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038509650] [2021-10-13 08:12:08,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:12:08,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:12:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:12:08,111 INFO L87 Difference]: Start difference. First operand 6379 states and 8275 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:08,302 INFO L93 Difference]: Finished difference Result 16955 states and 21973 transitions. [2021-10-13 08:12:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:12:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 363 [2021-10-13 08:12:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:08,317 INFO L225 Difference]: With dead ends: 16955 [2021-10-13 08:12:08,317 INFO L226 Difference]: Without dead ends: 6812 [2021-10-13 08:12:08,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 723 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 08:12:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6812 states. [2021-10-13 08:12:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6812 to 5973. [2021-10-13 08:12:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5972 states have (on average 1.27947086403215) internal successors, (7641), 5972 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 7641 transitions. [2021-10-13 08:12:08,549 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 7641 transitions. Word has length 363 [2021-10-13 08:12:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:08,549 INFO L470 AbstractCegarLoop]: Abstraction has 5973 states and 7641 transitions. [2021-10-13 08:12:08,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 7641 transitions. [2021-10-13 08:12:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-10-13 08:12:08,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:08,561 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 16, 14, 14, 12, 12, 10, 10, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:08,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:08,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:08,778 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2059048774, now seen corresponding path program 1 times [2021-10-13 08:12:08,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:08,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127578257] [2021-10-13 08:12:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:08,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:08,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:08,780 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:08,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 08:12:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:10,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:12:10,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1281 proven. 0 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-10-13 08:12:11,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1281 proven. 0 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-10-13 08:12:12,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:12,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127578257] [2021-10-13 08:12:12,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127578257] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:12,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:12,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:12:12,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344980863] [2021-10-13 08:12:12,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:12:12,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:12,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:12:12,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:12,206 INFO L87 Difference]: Start difference. First operand 5973 states and 7641 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:12,529 INFO L93 Difference]: Finished difference Result 12416 states and 16090 transitions. [2021-10-13 08:12:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:12:12,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 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 473 [2021-10-13 08:12:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:12,543 INFO L225 Difference]: With dead ends: 12416 [2021-10-13 08:12:12,543 INFO L226 Difference]: Without dead ends: 5535 [2021-10-13 08:12:12,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2021-10-13 08:12:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 5467. [2021-10-13 08:12:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5467 states, 5466 states have (on average 1.2607025246981338) internal successors, (6891), 5466 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 6891 transitions. [2021-10-13 08:12:12,719 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 6891 transitions. Word has length 473 [2021-10-13 08:12:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:12,719 INFO L470 AbstractCegarLoop]: Abstraction has 5467 states and 6891 transitions. [2021-10-13 08:12:12,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 6891 transitions. [2021-10-13 08:12:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-10-13 08:12:12,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:12,731 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 16, 14, 14, 13, 12, 10, 10, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:12,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:12,946 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash 887086097, now seen corresponding path program 1 times [2021-10-13 08:12:12,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:12,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184817026] [2021-10-13 08:12:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:12,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:12,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:12,948 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:12,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 08:12:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:14,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:12:14,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 1293 proven. 0 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-10-13 08:12:15,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 1293 proven. 0 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-10-13 08:12:16,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:16,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184817026] [2021-10-13 08:12:16,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184817026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:16,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:16,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:12:16,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733578443] [2021-10-13 08:12:16,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:12:16,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:12:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:16,498 INFO L87 Difference]: Start difference. First operand 5467 states and 6891 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:16,732 INFO L93 Difference]: Finished difference Result 10716 states and 13709 transitions. [2021-10-13 08:12:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:12:16,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 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 474 [2021-10-13 08:12:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:16,744 INFO L225 Difference]: With dead ends: 10716 [2021-10-13 08:12:16,744 INFO L226 Difference]: Without dead ends: 5169 [2021-10-13 08:12:16,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2021-10-13 08:12:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5094. [2021-10-13 08:12:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 1.2403298645199292) internal successors, (6317), 5093 states have internal predecessors, (6317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 6317 transitions. [2021-10-13 08:12:16,896 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 6317 transitions. Word has length 474 [2021-10-13 08:12:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:16,896 INFO L470 AbstractCegarLoop]: Abstraction has 5094 states and 6317 transitions. [2021-10-13 08:12:16,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 6317 transitions. [2021-10-13 08:12:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-10-13 08:12:16,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:16,907 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 17, 15, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 08:12:16,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:17,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:17,126 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -372933097, now seen corresponding path program 1 times [2021-10-13 08:12:17,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:17,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562098634] [2021-10-13 08:12:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:17,127 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:17,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:17,128 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 08:12:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:19,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:12:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2915 backedges. 1654 proven. 14 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-10-13 08:12:20,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2915 backedges. 1654 proven. 14 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-10-13 08:12:21,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:21,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562098634] [2021-10-13 08:12:21,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562098634] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:21,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [29534809] [2021-10-13 08:12:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:21,310 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:21,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:12:21,318 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:12:21,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-13 08:12:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:24,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:12:24,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2915 backedges. 1350 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-10-13 08:12:25,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2915 backedges. 1350 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-10-13 08:12:26,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [29534809] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:26,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:12:26,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-10-13 08:12:26,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185368391] [2021-10-13 08:12:26,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:12:26,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:12:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:12:26,420 INFO L87 Difference]: Start difference. First operand 5094 states and 6317 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:26,534 INFO L93 Difference]: Finished difference Result 5119 states and 6347 transitions. [2021-10-13 08:12:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:12:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 512 [2021-10-13 08:12:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:26,543 INFO L225 Difference]: With dead ends: 5119 [2021-10-13 08:12:26,543 INFO L226 Difference]: Without dead ends: 5042 [2021-10-13 08:12:26,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2044 GetRequests, 2039 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:12:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2021-10-13 08:12:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 5019. [2021-10-13 08:12:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5019 states, 5018 states have (on average 1.2401355121562376) internal successors, (6223), 5018 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 6223 transitions. [2021-10-13 08:12:26,692 INFO L78 Accepts]: Start accepts. Automaton has 5019 states and 6223 transitions. Word has length 512 [2021-10-13 08:12:26,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:26,694 INFO L470 AbstractCegarLoop]: Abstraction has 5019 states and 6223 transitions. [2021-10-13 08:12:26,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5019 states and 6223 transitions. [2021-10-13 08:12:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2021-10-13 08:12:26,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:26,705 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 20, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:26,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:26,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:27,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:27,123 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2062587142, now seen corresponding path program 1 times [2021-10-13 08:12:27,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:27,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006701861] [2021-10-13 08:12:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:27,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:27,126 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:27,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 08:12:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:29,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:12:29,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4154 backedges. 2137 proven. 14 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-10-13 08:12:30,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4154 backedges. 2137 proven. 14 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-10-13 08:12:32,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:32,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006701861] [2021-10-13 08:12:32,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006701861] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:32,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058126956] [2021-10-13 08:12:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:32,080 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:12:32,097 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:12:32,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-10-13 08:12:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:36,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:12:36,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4154 backedges. 2137 proven. 14 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-10-13 08:12:37,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4154 backedges. 2137 proven. 14 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-10-13 08:12:38,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058126956] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:38,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837656993] [2021-10-13 08:12:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:38,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:38,400 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:12:38,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 08:12:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:42,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:12:42,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4154 backedges. 2137 proven. 14 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-10-13 08:12:43,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4154 backedges. 2137 proven. 14 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-10-13 08:12:44,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837656993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:44,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:12:44,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 08:12:44,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165566496] [2021-10-13 08:12:44,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:12:44,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:12:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:12:44,439 INFO L87 Difference]: Start difference. First operand 5019 states and 6223 transitions. Second operand has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 6 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:44,627 INFO L93 Difference]: Finished difference Result 5254 states and 6521 transitions. [2021-10-13 08:12:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:12:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 6 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 624 [2021-10-13 08:12:44,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:44,628 INFO L225 Difference]: With dead ends: 5254 [2021-10-13 08:12:44,628 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:12:44,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3742 GetRequests, 3736 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:12:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:12:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:12:44,634 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 08:12:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:12:44,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 624 [2021-10-13 08:12:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:44,635 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:12:44,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 6 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:12:44,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:12:44,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:44,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:44,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:45,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:45,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:45,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:12:45,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:45,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:46,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:46,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:46,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:46,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:49,805 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 535) no Hoare annotation was computed. [2021-10-13 08:12:49,806 INFO L857 garLoopResultBuilder]: For program point L433(lines 433 435) no Hoare annotation was computed. [2021-10-13 08:12:49,806 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 336) no Hoare annotation was computed. [2021-10-13 08:12:49,806 INFO L860 garLoopResultBuilder]: At program point L202(lines 201 489) the Hoare annotation is: true [2021-10-13 08:12:49,806 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 499) no Hoare annotation was computed. [2021-10-13 08:12:49,806 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 510) no Hoare annotation was computed. [2021-10-13 08:12:49,806 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 521) no Hoare annotation was computed. [2021-10-13 08:12:49,822 INFO L853 garLoopResultBuilder]: At program point L170(lines 166 500) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 08:12:49,822 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 521) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (or (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))))) [2021-10-13 08:12:49,822 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-13 08:12:49,822 INFO L857 garLoopResultBuilder]: For program point L468-2(lines 468 470) no Hoare annotation was computed. [2021-10-13 08:12:49,822 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 440) no Hoare annotation was computed. [2021-10-13 08:12:49,822 INFO L857 garLoopResultBuilder]: For program point L436-2(lines 436 440) no Hoare annotation was computed. [2021-10-13 08:12:49,823 INFO L857 garLoopResultBuilder]: For program point L337(lines 337 341) no Hoare annotation was computed. [2021-10-13 08:12:49,823 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 273) no Hoare annotation was computed. [2021-10-13 08:12:49,823 INFO L857 garLoopResultBuilder]: For program point L337-2(lines 337 341) no Hoare annotation was computed. [2021-10-13 08:12:49,824 INFO L857 garLoopResultBuilder]: For program point L271-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 08:12:49,824 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 498) no Hoare annotation was computed. [2021-10-13 08:12:49,825 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 509) no Hoare annotation was computed. [2021-10-13 08:12:49,825 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 520) no Hoare annotation was computed. [2021-10-13 08:12:49,825 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 510) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 08:12:49,827 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 308) no Hoare annotation was computed. [2021-10-13 08:12:49,827 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 243) no Hoare annotation was computed. [2021-10-13 08:12:49,827 INFO L857 garLoopResultBuilder]: For program point L306-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 08:12:49,827 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 408) no Hoare annotation was computed. [2021-10-13 08:12:49,828 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 375) no Hoare annotation was computed. [2021-10-13 08:12:49,829 INFO L853 garLoopResultBuilder]: At program point L208(lines 106 520) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3) (and .cse0 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) .cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))))) [2021-10-13 08:12:49,829 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 497) no Hoare annotation was computed. [2021-10-13 08:12:49,829 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 508) no Hoare annotation was computed. [2021-10-13 08:12:49,830 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 519) no Hoare annotation was computed. [2021-10-13 08:12:49,830 INFO L853 garLoopResultBuilder]: At program point L176(lines 172 498) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 08:12:49,830 INFO L857 garLoopResultBuilder]: For program point L474(lines 474 476) no Hoare annotation was computed. [2021-10-13 08:12:49,831 INFO L857 garLoopResultBuilder]: For program point L474-2(lines 474 476) no Hoare annotation was computed. [2021-10-13 08:12:49,831 INFO L860 garLoopResultBuilder]: At program point L541(lines 99 542) the Hoare annotation is: true [2021-10-13 08:12:49,831 INFO L857 garLoopResultBuilder]: For program point L277(lines 277 281) no Hoare annotation was computed. [2021-10-13 08:12:49,832 INFO L857 garLoopResultBuilder]: For program point L277-2(lines 277 281) no Hoare annotation was computed. [2021-10-13 08:12:49,832 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 496) no Hoare annotation was computed. [2021-10-13 08:12:49,832 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 507) no Hoare annotation was computed. [2021-10-13 08:12:49,832 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 518) no Hoare annotation was computed. [2021-10-13 08:12:49,832 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 508) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 08:12:49,833 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 215) no Hoare annotation was computed. [2021-10-13 08:12:49,833 INFO L857 garLoopResultBuilder]: For program point L213-2(lines 213 215) no Hoare annotation was computed. [2021-10-13 08:12:49,833 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 495) no Hoare annotation was computed. [2021-10-13 08:12:49,835 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 506) no Hoare annotation was computed. [2021-10-13 08:12:49,835 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 517) no Hoare annotation was computed. [2021-10-13 08:12:49,835 INFO L857 garLoopResultBuilder]: For program point L479(lines 479 481) no Hoare annotation was computed. [2021-10-13 08:12:49,835 INFO L857 garLoopResultBuilder]: For program point L446(lines 446 457) no Hoare annotation was computed. [2021-10-13 08:12:49,836 INFO L857 garLoopResultBuilder]: For program point L413(lines 413 427) no Hoare annotation was computed. [2021-10-13 08:12:49,836 INFO L857 garLoopResultBuilder]: For program point L413-1(lines 413 427) no Hoare annotation was computed. [2021-10-13 08:12:49,836 INFO L857 garLoopResultBuilder]: For program point L446-2(lines 446 457) no Hoare annotation was computed. [2021-10-13 08:12:49,836 INFO L857 garLoopResultBuilder]: For program point L314(lines 314 317) no Hoare annotation was computed. [2021-10-13 08:12:49,837 INFO L853 garLoopResultBuilder]: At program point L182(lines 178 496) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse5 .cse6 .cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 .cse7))) [2021-10-13 08:12:49,837 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 548) no Hoare annotation was computed. [2021-10-13 08:12:49,837 INFO L857 garLoopResultBuilder]: For program point L546-2(lines 546 548) no Hoare annotation was computed. [2021-10-13 08:12:49,837 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 351) no Hoare annotation was computed. [2021-10-13 08:12:49,837 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 494) no Hoare annotation was computed. [2021-10-13 08:12:49,838 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 505) no Hoare annotation was computed. [2021-10-13 08:12:49,838 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 516) no Hoare annotation was computed. [2021-10-13 08:12:49,838 INFO L857 garLoopResultBuilder]: For program point L383(lines 383 385) no Hoare annotation was computed. [2021-10-13 08:12:49,838 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:12:49,838 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 221) no Hoare annotation was computed. [2021-10-13 08:12:49,840 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 506) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 08:12:49,840 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 92) no Hoare annotation was computed. [2021-10-13 08:12:49,840 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 08:12:49,840 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 258) no Hoare annotation was computed. [2021-10-13 08:12:49,840 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 454) no Hoare annotation was computed. [2021-10-13 08:12:49,841 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 493) no Hoare annotation was computed. [2021-10-13 08:12:49,841 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 504) no Hoare annotation was computed. [2021-10-13 08:12:49,841 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 515) no Hoare annotation was computed. [2021-10-13 08:12:49,841 INFO L860 garLoopResultBuilder]: At program point L551(lines 12 553) the Hoare annotation is: true [2021-10-13 08:12:49,841 INFO L853 garLoopResultBuilder]: At program point L188(lines 184 494) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse5 .cse6 .cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 .cse7))) [2021-10-13 08:12:49,842 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 516) the Hoare annotation is: (let ((.cse0 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse1 .cse2 .cse3 .cse4 .cse5) (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))))) [2021-10-13 08:12:49,842 INFO L857 garLoopResultBuilder]: For program point L89(lines 89 91) no Hoare annotation was computed. [2021-10-13 08:12:49,842 INFO L857 garLoopResultBuilder]: For program point L89-2(lines 86 92) no Hoare annotation was computed. [2021-10-13 08:12:49,842 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 298) no Hoare annotation was computed. [2021-10-13 08:12:49,843 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 257) no Hoare annotation was computed. [2021-10-13 08:12:49,843 INFO L857 garLoopResultBuilder]: For program point L288-2(lines 288 298) no Hoare annotation was computed. [2021-10-13 08:12:49,843 INFO L857 garLoopResultBuilder]: For program point L255-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 08:12:49,844 INFO L853 garLoopResultBuilder]: At program point L487(lines 100 540) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32))) (.cse8 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (.cse4 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4368 32)))) (.cse10 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (.cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse6 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4512 32))) (.cse7 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse11 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4528 32)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse5 .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)) .cse6) (and .cse7 .cse3) (and .cse0 (= (_ bv4464 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse1 .cse6) (and .cse0 .cse1 (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse6) (and .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)) .cse6) (and .cse7 .cse1) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse7 .cse8) (and .cse7 .cse9) (and .cse0 .cse1 .cse6 (= (_ bv4480 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4448 32)) .cse6) (and .cse5 .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv3 32))) (and .cse0 .cse1 .cse2 .cse8) (and (not .cse4) .cse0 .cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) .cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) .cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (and (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse10) (and .cse5 .cse0 .cse1 .cse6 .cse10) (and .cse0 .cse1 .cse11 .cse6) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4496 32)) .cse1 .cse6) (and .cse0 .cse1 .cse6 .cse9) (and .cse7 .cse11))) [2021-10-13 08:12:49,844 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 324) no Hoare annotation was computed. [2021-10-13 08:12:49,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:12:49,844 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 492) no Hoare annotation was computed. [2021-10-13 08:12:49,844 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 503) no Hoare annotation was computed. [2021-10-13 08:12:49,845 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 514) no Hoare annotation was computed. [2021-10-13 08:12:49,845 INFO L857 garLoopResultBuilder]: For program point L389(lines 389 393) no Hoare annotation was computed. [2021-10-13 08:12:49,845 INFO L853 garLoopResultBuilder]: At program point L323(lines 77 552) the Hoare annotation is: false [2021-10-13 08:12:49,845 INFO L857 garLoopResultBuilder]: For program point L389-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 08:12:49,846 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 235) no Hoare annotation was computed. [2021-10-13 08:12:49,846 INFO L857 garLoopResultBuilder]: For program point L224-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 08:12:49,846 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 538) no Hoare annotation was computed. [2021-10-13 08:12:49,846 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 537) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 360) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 327) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L226(lines 226 229) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L292-2(lines 290 298) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 491) no Hoare annotation was computed. [2021-10-13 08:12:49,847 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 502) no Hoare annotation was computed. [2021-10-13 08:12:49,848 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 513) no Hoare annotation was computed. [2021-10-13 08:12:49,848 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 98) no Hoare annotation was computed. [2021-10-13 08:12:49,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:12:49,848 INFO L857 garLoopResultBuilder]: For program point L524(lines 524 529) no Hoare annotation was computed. [2021-10-13 08:12:49,848 INFO L857 garLoopResultBuilder]: For program point L524-2(lines 523 537) no Hoare annotation was computed. [2021-10-13 08:12:49,848 INFO L853 garLoopResultBuilder]: At program point L194(lines 190 492) the Hoare annotation is: (let ((.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse12 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse2 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse10 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse11 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse0 .cse12 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse11 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (and .cse0 .cse12 .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse11) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse8 .cse9 .cse10 .cse11))) [2021-10-13 08:12:49,849 INFO L853 garLoopResultBuilder]: At program point L128(lines 124 514) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse7 .cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2021-10-13 08:12:49,849 INFO L857 garLoopResultBuilder]: For program point L95(lines 95 97) no Hoare annotation was computed. [2021-10-13 08:12:49,849 INFO L857 garLoopResultBuilder]: For program point L526(lines 526 528) no Hoare annotation was computed. [2021-10-13 08:12:49,849 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 490) no Hoare annotation was computed. [2021-10-13 08:12:49,849 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 501) no Hoare annotation was computed. [2021-10-13 08:12:49,849 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 512) no Hoare annotation was computed. [2021-10-13 08:12:49,850 INFO L857 garLoopResultBuilder]: For program point L362(lines 362 367) no Hoare annotation was computed. [2021-10-13 08:12:49,850 INFO L857 garLoopResultBuilder]: For program point L362-2(lines 362 367) no Hoare annotation was computed. [2021-10-13 08:12:49,850 INFO L857 garLoopResultBuilder]: For program point L230(lines 230 233) no Hoare annotation was computed. [2021-10-13 08:12:49,850 INFO L853 garLoopResultBuilder]: At program point L197(lines 196 490) the Hoare annotation is: (let ((.cse11 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse2 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse10 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse7 .cse8 .cse9 .cse10) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse11 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (and .cse0 .cse11 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse10) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse7 .cse8 .cse9 .cse10))) [2021-10-13 08:12:49,850 INFO L853 garLoopResultBuilder]: At program point L164(lines 154 504) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 08:12:49,851 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:12:49,851 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 550) no Hoare annotation was computed. [2021-10-13 08:12:49,851 INFO L857 garLoopResultBuilder]: For program point L462-1(lines 462 464) no Hoare annotation was computed. [2021-10-13 08:12:49,851 INFO L857 garLoopResultBuilder]: For program point L264(lines 264 266) no Hoare annotation was computed. [2021-10-13 08:12:49,851 INFO L860 garLoopResultBuilder]: At program point L562(lines 554 564) the Hoare annotation is: true [2021-10-13 08:12:49,851 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 489) no Hoare annotation was computed. [2021-10-13 08:12:49,851 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 500) no Hoare annotation was computed. [2021-10-13 08:12:49,852 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 511) no Hoare annotation was computed. [2021-10-13 08:12:49,852 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 77 552) no Hoare annotation was computed. [2021-10-13 08:12:49,852 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 401) no Hoare annotation was computed. [2021-10-13 08:12:49,852 INFO L860 garLoopResultBuilder]: At program point L200(lines 199 489) the Hoare annotation is: true [2021-10-13 08:12:49,852 INFO L853 garLoopResultBuilder]: At program point L134(lines 130 512) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2021-10-13 08:12:49,852 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 08:12:49,857 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:12:49,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:12:49 BoogieIcfgContainer [2021-10-13 08:12:49,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:12:49,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:12:49,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:12:49,922 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:12:49,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:25" (3/4) ... [2021-10-13 08:12:49,926 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:12:49,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 08:12:49,952 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:12:49,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:12:49,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:12:50,081 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:12:50,082 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:12:50,084 INFO L168 Benchmark]: Toolchain (without parser) took 85823.78 ms. Allocated memory was 52.4 MB in the beginning and 664.8 MB in the end (delta: 612.4 MB). Free memory was 28.2 MB in the beginning and 300.7 MB in the end (delta: -272.5 MB). Peak memory consumption was 340.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:50,084 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:50,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.63 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 42.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:50,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.35 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 39.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:50,086 INFO L168 Benchmark]: Boogie Preprocessor took 54.92 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 38.0 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:50,087 INFO L168 Benchmark]: RCFGBuilder took 876.01 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 40.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:50,087 INFO L168 Benchmark]: TraceAbstraction took 84222.49 ms. Allocated memory was 62.9 MB in the beginning and 664.8 MB in the end (delta: 601.9 MB). Free memory was 39.8 MB in the beginning and 311.2 MB in the end (delta: -271.3 MB). Peak memory consumption was 523.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:50,088 INFO L168 Benchmark]: Witness Printer took 160.46 ms. Allocated memory is still 664.8 MB. Free memory was 310.1 MB in the beginning and 300.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:50,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 419.63 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 42.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.35 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 39.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.92 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 38.0 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 876.01 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 40.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 84222.49 ms. Allocated memory was 62.9 MB in the beginning and 664.8 MB in the end (delta: 601.9 MB). Free memory was 39.8 MB in the beginning and 311.2 MB in the end (delta: -271.3 MB). Peak memory consumption was 523.4 MB. Max. memory is 16.1 GB. * Witness Printer took 160.46 ms. Allocated memory is still 664.8 MB. Free memory was 310.1 MB in the beginning and 300.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 550]: 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, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 84099.6ms, OverallIterations: 24, TraceHistogramMax: 22, EmptinessCheckTime: 163.3ms, AutomataDifference: 5397.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4555.7ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4171 SDtfs, 3413 SDslu, 3470 SDs, 0 SdLazy, 3169 SolverSat, 663 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2452.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15976 GetRequests, 15923 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 176.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6379occurred in iteration=19, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2153.6ms AutomataMinimizationTime, 24 MinimizatonAttempts, 6553 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 332 NumberOfFragments, 1426 HoareAnnotationTreeSize, 22 FomulaSimplifications, 21460 FormulaSimplificationTreeSizeReduction, 1437.9ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 13561 FormulaSimplificationTreeSizeReductionInter, 3102.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 540.1ms SsaConstructionTime, 2248.4ms SatisfiabilityAnalysisTime, 31509.3ms InterpolantComputationTime, 8011 NumberOfCodeBlocks, 8011 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 15964 ConstructedInterpolants, 0 QuantifiedInterpolants, 20430 SizeOfPredicates, 10 NumberOfNonLiveVariables, 9860 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 58 InterpolantComputations, 44 PerfectInterpolantSequences, 74760/74932 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: 154]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: (0bv32 == blastFlag && s__state == 12292bv32) || ((s__state == 12292bv32 && 2bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 201]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && !(s__s3__tmp__next_state___0 == 4368bv32)) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) || (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: ((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && !(s__s3__tmp__next_state___0 == 4368bv32)) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) || ((((((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && 1bv32 == blastFlag) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4401bv32))) || (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: (((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) || (((((((((!(s__state == 4368bv32) && 0bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4401bv32)) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: ((((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 196]: Loop Invariant Derived loop invariant: (((((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) || ((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && s__state == 4352bv32)) || (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32))) || (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: (((((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) || ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4401bv32))) || (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32))) || (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 554]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4560bv32) || (s__state == 4368bv32 && 0bv32 == blastFlag)) || ((((!(s__s3__tmp__next_state___0 == 4368bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && s__state == 4400bv32) && !(5bv32 == blastFlag))) || (2bv32 == blastFlag && s__state == 4560bv32)) || (((!(3bv32 == blastFlag) && 4464bv32 == s__state) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && 4432bv32 == s__state) && !(5bv32 == blastFlag))) || ((s__hit == 0bv32 && s__state == 4416bv32) && !(5bv32 == blastFlag))) || (2bv32 == blastFlag && s__hit == 0bv32)) || ((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && s__state == 4352bv32)) || (2bv32 == blastFlag && s__state == 4512bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && 4480bv32 == s__state)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4448bv32) && !(5bv32 == blastFlag))) || ((!(s__s3__tmp__next_state___0 == 4368bv32) && !(3bv32 == blastFlag)) && s__state == 3bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32)) || ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32))) || (1bv32 == blastFlag && s__state == 4384bv32)) || ((((!(s__s3__tmp__next_state___0 == 4368bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__state == 4384bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4528bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__state == 4496bv32) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__state == 4512bv32)) || (2bv32 == blastFlag && s__state == 4528bv32) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: (((((((2bv32 == blastFlag && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) || (((((((((0bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4401bv32)) - InvariantResult [Line: 184]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4401bv32)) || ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 178]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4401bv32)) || ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-13 08:12:50,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e89dfd-85df-4e75-a9dc-66b9f6e26757/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...