./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/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_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/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_6ddd837f-2516-4120-914b-62505c5c8a27/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 724fb2d5eb33b2f1563a1f753919b88185f2f4bb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/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_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/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_6ddd837f-2516-4120-914b-62505c5c8a27/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 724fb2d5eb33b2f1563a1f753919b88185f2f4bb ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:18,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:18,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:18,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:18,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:18,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:18,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:18,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:18,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:18,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:18,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:18,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:18,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:18,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:18,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:18,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:18,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:18,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:18,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:18,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:18,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:18,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:18,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:18,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:18,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:18,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:18,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:18,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:18,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:18,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:18,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:18,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:18,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:18,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:18,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:18,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:18,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:18,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:18,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:18,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:18,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:18,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:28:18,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:18,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:18,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:18,354 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:18,355 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:18,355 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:18,355 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:28:18,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:18,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:18,356 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:28:18,357 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:28:18,357 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:18,357 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:28:18,357 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:28:18,358 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:28:18,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:18,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:28:18,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:28:18,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:28:18,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:18,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:28:18,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:18,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:28:18,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:18,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:28:18,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:28:18,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:18,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:28:18,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:18,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:18,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:18,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:18,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:18,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:28:18,364 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:28:18,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:28:18,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:28:18,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:18,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:18,365 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_6ddd837f-2516-4120-914b-62505c5c8a27/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724fb2d5eb33b2f1563a1f753919b88185f2f4bb [2021-10-13 07:28:18,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:18,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:18,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:18,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:18,698 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:18,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-13 07:28:18,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/36a4f0434/031bcae2252b44fe974465ee1beafdf4/FLAG5c0addbda [2021-10-13 07:28:19,272 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:19,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-13 07:28:19,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/36a4f0434/031bcae2252b44fe974465ee1beafdf4/FLAG5c0addbda [2021-10-13 07:28:19,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/36a4f0434/031bcae2252b44fe974465ee1beafdf4 [2021-10-13 07:28:19,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:19,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:19,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:19,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:19,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:19,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:19" (1/1) ... [2021-10-13 07:28:19,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b74f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:19, skipping insertion in model container [2021-10-13 07:28:19,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:19" (1/1) ... [2021-10-13 07:28:19,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:19,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:19,936 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_6ddd837f-2516-4120-914b-62505c5c8a27/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42372,42385] [2021-10-13 07:28:19,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:19,959 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:20,012 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_6ddd837f-2516-4120-914b-62505c5c8a27/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42372,42385] [2021-10-13 07:28:20,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:20,029 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:20,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20 WrapperNode [2021-10-13 07:28:20,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:20,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:20,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:20,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:20,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:20,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:20,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:20,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:20,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:20,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:20,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:20,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:20,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (1/1) ... [2021-10-13 07:28:20,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:20,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:20,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:20,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:20,475 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:28:21,053 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:28:21,053 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:28:21,368 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:21,368 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:28:21,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:21 BoogieIcfgContainer [2021-10-13 07:28:21,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:21,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:21,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:21,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:21,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:19" (1/3) ... [2021-10-13 07:28:21,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0b0a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:21, skipping insertion in model container [2021-10-13 07:28:21,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:20" (2/3) ... [2021-10-13 07:28:21,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0b0a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:21, skipping insertion in model container [2021-10-13 07:28:21,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:21" (3/3) ... [2021-10-13 07:28:21,382 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-1.c [2021-10-13 07:28:21,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:21,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:28:21,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:21,454 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:28:21,455 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:28:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:28:21,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:21,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:21,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:21,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1080438681, now seen corresponding path program 1 times [2021-10-13 07:28:21,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:21,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189583413] [2021-10-13 07:28:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:21,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:21,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:21,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189583413] [2021-10-13 07:28:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189583413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:21,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:21,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:28:21,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84679615] [2021-10-13 07:28:21,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:21,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:28:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:21,825 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:22,094 INFO L93 Difference]: Finished difference Result 231 states and 400 transitions. [2021-10-13 07:28:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 07:28:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:22,107 INFO L225 Difference]: With dead ends: 231 [2021-10-13 07:28:22,108 INFO L226 Difference]: Without dead ends: 121 [2021-10-13 07:28:22,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:28:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-13 07:28:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-10-13 07:28:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2021-10-13 07:28:22,158 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 39 [2021-10-13 07:28:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:22,159 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2021-10-13 07:28:22,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2021-10-13 07:28:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 07:28:22,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:22,163 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:22,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:28:22,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash 553561807, now seen corresponding path program 1 times [2021-10-13 07:28:22,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:22,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101932346] [2021-10-13 07:28:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:22,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:22,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:22,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101932346] [2021-10-13 07:28:22,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101932346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:22,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:22,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:28:22,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926261870] [2021-10-13 07:28:22,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:22,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:28:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:22,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:22,270 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:22,452 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2021-10-13 07:28:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:22,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 07:28:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:22,460 INFO L225 Difference]: With dead ends: 257 [2021-10-13 07:28:22,461 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:28:22,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:28:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-10-13 07:28:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2021-10-13 07:28:22,490 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 53 [2021-10-13 07:28:22,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:22,490 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2021-10-13 07:28:22,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,491 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2021-10-13 07:28:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 07:28:22,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:22,494 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:22,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:28:22,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash -570388588, now seen corresponding path program 1 times [2021-10-13 07:28:22,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:22,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186606182] [2021-10-13 07:28:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:22,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:28:22,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:22,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186606182] [2021-10-13 07:28:22,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186606182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:22,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:22,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:28:22,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771163051] [2021-10-13 07:28:22,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:22,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:28:22,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:22,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:22,642 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:22,875 INFO L93 Difference]: Finished difference Result 319 states and 470 transitions. [2021-10-13 07:28:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 07:28:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:22,878 INFO L225 Difference]: With dead ends: 319 [2021-10-13 07:28:22,879 INFO L226 Difference]: Without dead ends: 183 [2021-10-13 07:28:22,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-13 07:28:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2021-10-13 07:28:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2021-10-13 07:28:22,911 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 70 [2021-10-13 07:28:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:22,912 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2021-10-13 07:28:22,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2021-10-13 07:28:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 07:28:22,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:22,914 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:22,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:28:22,917 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:22,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1195988722, now seen corresponding path program 1 times [2021-10-13 07:28:22,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:22,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984997997] [2021-10-13 07:28:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:22,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:28:23,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:23,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984997997] [2021-10-13 07:28:23,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984997997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:23,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:23,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:28:23,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659464257] [2021-10-13 07:28:23,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:23,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:28:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:23,039 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:23,204 INFO L93 Difference]: Finished difference Result 383 states and 532 transitions. [2021-10-13 07:28:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 07:28:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:23,207 INFO L225 Difference]: With dead ends: 383 [2021-10-13 07:28:23,208 INFO L226 Difference]: Without dead ends: 209 [2021-10-13 07:28:23,208 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 07:28:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-13 07:28:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-10-13 07:28:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3333333333333333) internal successors, (264), 198 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2021-10-13 07:28:23,218 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 90 [2021-10-13 07:28:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:23,219 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2021-10-13 07:28:23,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2021-10-13 07:28:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-13 07:28:23,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:23,222 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:23,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:28:23,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:23,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:23,223 INFO L82 PathProgramCache]: Analyzing trace with hash 494293362, now seen corresponding path program 1 times [2021-10-13 07:28:23,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:23,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621222980] [2021-10-13 07:28:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:23,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:23,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:23,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621222980] [2021-10-13 07:28:23,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621222980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:28:23,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786808591] [2021-10-13 07:28:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:23,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:23,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:23,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:28:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:28:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:23,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 07:28:24,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786808591] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:24,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550286836] [2021-10-13 07:28:24,537 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-10-13 07:28:24,537 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:28:24,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:28:24,551 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:28:24,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:28:24,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:24,752 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:28:24,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:24,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:28:24,756 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:28:24,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:24,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:28:24,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-13 07:28:24,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:24,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:24,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:24,927 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:28:24,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:28:24,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:24,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:28:24,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:24,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:28:24,939 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:28:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:24,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:25,037 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:28:25,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:28:25,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:25,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:28:25,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:25,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:28:25,049 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:28:25,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:25,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:25,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:25,153 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:28:25,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:28:25,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:25,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:28:25,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:25,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:28:25,161 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:28:25,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:28:25,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:25,418 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-13 07:28:25,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1071 [2021-10-13 07:28:25,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:28:25,485 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1071 [2021-10-13 07:28:25,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:25,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:25,701 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_21| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:28:25,705 INFO L168 Benchmark]: Toolchain (without parser) took 6075.28 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 73.4 MB in the beginning and 111.8 MB in the end (delta: -38.4 MB). Peak memory consumption was 72.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:25,705 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:25,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.28 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 82.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:25,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.31 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 79.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:25,707 INFO L168 Benchmark]: Boogie Preprocessor took 71.27 ms. Allocated memory is still 111.1 MB. Free memory was 79.4 MB in the beginning and 77.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:25,707 INFO L168 Benchmark]: RCFGBuilder took 1175.21 ms. Allocated memory is still 111.1 MB. Free memory was 77.3 MB in the beginning and 65.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:25,708 INFO L168 Benchmark]: TraceAbstraction took 4329.98 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 64.8 MB in the beginning and 111.8 MB in the end (delta: -47.0 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:25,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.28 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 82.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.31 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 79.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.27 ms. Allocated memory is still 111.1 MB. Free memory was 79.4 MB in the beginning and 77.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1175.21 ms. Allocated memory is still 111.1 MB. Free memory was 77.3 MB in the beginning and 65.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4329.98 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 64.8 MB in the beginning and 111.8 MB in the end (delta: -47.0 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_21|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:28:25,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:28,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:28,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:28,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:28,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:28,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:28,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:28,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:28,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:28,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:28,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:28,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:28,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:28,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:28,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:28,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:28,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:28,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:28,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:28,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:28,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:28,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:28,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:28,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:28,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:28,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:28,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:28,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:28,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:28,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:28,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:28,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:28,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:28,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:28,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:28,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:28,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:28,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:28,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:28,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:28,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:28,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:28:28,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:28,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:28,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:28,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:28,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:28,518 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:28,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:28,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:28,519 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:28,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:28,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:28:28,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:28:28,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:28,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:28:28,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:28,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:28:28,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:28,522 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:28:28,522 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:28:28,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:28:28,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:28:28,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:28,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:28:28,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:28,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:28:28,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:28,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:28,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:28,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:28,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:28:28,525 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:28:28,525 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:28,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:28:28,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:28,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:28,526 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_6ddd837f-2516-4120-914b-62505c5c8a27/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724fb2d5eb33b2f1563a1f753919b88185f2f4bb [2021-10-13 07:28:28,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:28,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:28,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:28,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:28,937 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:28,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-13 07:28:29,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/ce139769d/b12cb944b5544f49a409bfac98263eb2/FLAGee3208897 [2021-10-13 07:28:29,653 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:29,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-13 07:28:29,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/ce139769d/b12cb944b5544f49a409bfac98263eb2/FLAGee3208897 [2021-10-13 07:28:29,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/data/ce139769d/b12cb944b5544f49a409bfac98263eb2 [2021-10-13 07:28:29,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:29,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:29,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:29,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:29,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:29,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:29" (1/1) ... [2021-10-13 07:28:29,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7a16f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:29, skipping insertion in model container [2021-10-13 07:28:29,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:29" (1/1) ... [2021-10-13 07:28:29,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:30,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:30,267 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_6ddd837f-2516-4120-914b-62505c5c8a27/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42372,42385] [2021-10-13 07:28:30,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:30,355 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:30,435 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_6ddd837f-2516-4120-914b-62505c5c8a27/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42372,42385] [2021-10-13 07:28:30,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:30,451 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:30,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30 WrapperNode [2021-10-13 07:28:30,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:30,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:30,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:30,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:30,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:30,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:30,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:30,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:30,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:30,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:30,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:30,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:30,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (1/1) ... [2021-10-13 07:28:30,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:30,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:30,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:30,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:28:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:30,898 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:28:31,598 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:28:31,598 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:28:31,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:31,626 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:28:31,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:31 BoogieIcfgContainer [2021-10-13 07:28:31,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:31,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:31,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:31,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:31,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:29" (1/3) ... [2021-10-13 07:28:31,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53acc3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:31, skipping insertion in model container [2021-10-13 07:28:31,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:30" (2/3) ... [2021-10-13 07:28:31,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53acc3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:31, skipping insertion in model container [2021-10-13 07:28:31,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:31" (3/3) ... [2021-10-13 07:28:31,636 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-1.c [2021-10-13 07:28:31,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:31,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:28:31,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:31,701 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:28:31,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:28:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:28:31,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:31,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:31,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1632005994, now seen corresponding path program 1 times [2021-10-13 07:28:31,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:31,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187932157] [2021-10-13 07:28:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:31,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:31,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:31,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:28:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:31,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:28:31,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:32,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:32,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:32,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187932157] [2021-10-13 07:28:32,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187932157] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:32,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:32,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:32,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075601146] [2021-10-13 07:28:32,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:32,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:32,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:32,331 INFO L87 Difference]: Start difference. First operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:32,579 INFO L93 Difference]: Finished difference Result 302 states and 514 transitions. [2021-10-13 07:28:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:32,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 07:28:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:32,597 INFO L225 Difference]: With dead ends: 302 [2021-10-13 07:28:32,597 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 07:28:32,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:32,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 07:28:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-10-13 07:28:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 145 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-10-13 07:28:32,657 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 44 [2021-10-13 07:28:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:32,657 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-10-13 07:28:32,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-10-13 07:28:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 07:28:32,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:32,661 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:32,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:32,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:32,873 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:32,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1928463050, now seen corresponding path program 1 times [2021-10-13 07:28:32,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:32,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347697354] [2021-10-13 07:28:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:32,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:32,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:32,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:32,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:28:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:32,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:32,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:33,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:33,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:33,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347697354] [2021-10-13 07:28:33,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347697354] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:33,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:33,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:33,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316872051] [2021-10-13 07:28:33,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:33,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:33,302 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:33,464 INFO L93 Difference]: Finished difference Result 310 states and 472 transitions. [2021-10-13 07:28:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 07:28:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:33,467 INFO L225 Difference]: With dead ends: 310 [2021-10-13 07:28:33,468 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 07:28:33,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 07:28:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 167. [2021-10-13 07:28:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-13 07:28:33,485 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 60 [2021-10-13 07:28:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:33,486 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-13 07:28:33,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-13 07:28:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:28:33,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:33,490 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:33,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:33,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:33,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1665246877, now seen corresponding path program 1 times [2021-10-13 07:28:33,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:33,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612036124] [2021-10-13 07:28:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:33,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:33,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:28:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:33,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:33,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:28:34,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:28:34,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:34,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612036124] [2021-10-13 07:28:34,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612036124] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:34,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:34,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:34,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423477510] [2021-10-13 07:28:34,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:34,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:34,326 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:34,521 INFO L93 Difference]: Finished difference Result 372 states and 561 transitions. [2021-10-13 07:28:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-13 07:28:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:34,526 INFO L225 Difference]: With dead ends: 372 [2021-10-13 07:28:34,526 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 07:28:34,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 07:28:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2021-10-13 07:28:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4038461538461537) internal successors, (292), 208 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2021-10-13 07:28:34,559 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 81 [2021-10-13 07:28:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:34,561 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2021-10-13 07:28:34,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2021-10-13 07:28:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:28:34,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:34,571 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:34,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:34,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:34,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1913393371, now seen corresponding path program 1 times [2021-10-13 07:28:34,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:34,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142304210] [2021-10-13 07:28:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:34,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:34,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:34,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:34,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:28:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:34,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:34,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:28:35,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:28:35,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:35,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142304210] [2021-10-13 07:28:35,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142304210] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:35,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489483151] [2021-10-13 07:28:35,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:35,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:35,334 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:35,466 INFO L93 Difference]: Finished difference Result 437 states and 619 transitions. [2021-10-13 07:28:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-13 07:28:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:35,469 INFO L225 Difference]: With dead ends: 437 [2021-10-13 07:28:35,469 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 07:28:35,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 07:28:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2021-10-13 07:28:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 231 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 320 transitions. [2021-10-13 07:28:35,504 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 320 transitions. Word has length 81 [2021-10-13 07:28:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:35,507 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 320 transitions. [2021-10-13 07:28:35,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 320 transitions. [2021-10-13 07:28:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 07:28:35,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:35,509 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:35,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:35,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:35,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:35,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1927243720, now seen corresponding path program 1 times [2021-10-13 07:28:35,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:35,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464751708] [2021-10-13 07:28:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:35,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:35,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:35,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:28:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:35,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:35,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:28:36,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:28:36,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:36,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464751708] [2021-10-13 07:28:36,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464751708] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:36,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:36,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:36,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548792571] [2021-10-13 07:28:36,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:36,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:36,398 INFO L87 Difference]: Start difference. First operand 232 states and 320 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:36,548 INFO L93 Difference]: Finished difference Result 494 states and 695 transitions. [2021-10-13 07:28:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-13 07:28:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:36,551 INFO L225 Difference]: With dead ends: 494 [2021-10-13 07:28:36,551 INFO L226 Difference]: Without dead ends: 270 [2021-10-13 07:28:36,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-13 07:28:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2021-10-13 07:28:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3671875) internal successors, (350), 256 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 350 transitions. [2021-10-13 07:28:36,563 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 350 transitions. Word has length 102 [2021-10-13 07:28:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:36,563 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 350 transitions. [2021-10-13 07:28:36,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 350 transitions. [2021-10-13 07:28:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 07:28:36,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:36,565 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:36,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:36,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:36,780 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1383340250, now seen corresponding path program 1 times [2021-10-13 07:28:36,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:36,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013331348] [2021-10-13 07:28:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:36,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:36,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:36,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:36,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:28:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:37,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:28:37,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:28:37,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:37,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013331348] [2021-10-13 07:28:37,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013331348] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:37,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:37,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:37,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478000593] [2021-10-13 07:28:37,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:37,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:37,662 INFO L87 Difference]: Start difference. First operand 257 states and 350 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:37,731 INFO L93 Difference]: Finished difference Result 970 states and 1325 transitions. [2021-10-13 07:28:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-13 07:28:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:37,738 INFO L225 Difference]: With dead ends: 970 [2021-10-13 07:28:37,738 INFO L226 Difference]: Without dead ends: 721 [2021-10-13 07:28:37,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-10-13 07:28:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2021-10-13 07:28:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.3625) internal successors, (981), 720 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 981 transitions. [2021-10-13 07:28:37,770 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 981 transitions. Word has length 121 [2021-10-13 07:28:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:37,770 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 981 transitions. [2021-10-13 07:28:37,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 981 transitions. [2021-10-13 07:28:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:28:37,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:37,774 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:37,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:37,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:37,988 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:37,989 INFO L82 PathProgramCache]: Analyzing trace with hash 56372730, now seen corresponding path program 1 times [2021-10-13 07:28:37,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:37,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369761315] [2021-10-13 07:28:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:37,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:37,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:37,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:37,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:28:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:38,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:38,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:28:38,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:28:38,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:38,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369761315] [2021-10-13 07:28:38,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369761315] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:38,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:38,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:38,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167783193] [2021-10-13 07:28:38,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:38,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:38,929 INFO L87 Difference]: Start difference. First operand 721 states and 981 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:38,976 INFO L93 Difference]: Finished difference Result 1458 states and 1980 transitions. [2021-10-13 07:28:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 122 [2021-10-13 07:28:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:38,983 INFO L225 Difference]: With dead ends: 1458 [2021-10-13 07:28:38,983 INFO L226 Difference]: Without dead ends: 745 [2021-10-13 07:28:38,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-10-13 07:28:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-10-13 07:28:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 1.35752688172043) internal successors, (1010), 744 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1010 transitions. [2021-10-13 07:28:39,038 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1010 transitions. Word has length 122 [2021-10-13 07:28:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:39,039 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1010 transitions. [2021-10-13 07:28:39,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1010 transitions. [2021-10-13 07:28:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:28:39,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:39,046 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:39,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:28:39,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:39,264 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:39,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:39,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1445666744, now seen corresponding path program 1 times [2021-10-13 07:28:39,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:39,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383855327] [2021-10-13 07:28:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:39,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:39,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:39,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:28:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:39,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:39,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 07:28:39,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 07:28:40,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:40,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383855327] [2021-10-13 07:28:40,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383855327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:40,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:40,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:28:40,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732247773] [2021-10-13 07:28:40,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:40,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:40,195 INFO L87 Difference]: Start difference. First operand 745 states and 1010 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:40,229 INFO L93 Difference]: Finished difference Result 1495 states and 2022 transitions. [2021-10-13 07:28:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 122 [2021-10-13 07:28:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:40,235 INFO L225 Difference]: With dead ends: 1495 [2021-10-13 07:28:40,235 INFO L226 Difference]: Without dead ends: 758 [2021-10-13 07:28:40,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-13 07:28:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2021-10-13 07:28:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.3513870541611626) internal successors, (1023), 757 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1023 transitions. [2021-10-13 07:28:40,267 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1023 transitions. Word has length 122 [2021-10-13 07:28:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:40,268 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 1023 transitions. [2021-10-13 07:28:40,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:40,268 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1023 transitions. [2021-10-13 07:28:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-13 07:28:40,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:40,273 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:40,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:40,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:40,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1504970762, now seen corresponding path program 1 times [2021-10-13 07:28:40,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:40,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820499168] [2021-10-13 07:28:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:40,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:40,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:40,490 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:40,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:28:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:40,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:40,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-13 07:28:41,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-13 07:28:41,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:41,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820499168] [2021-10-13 07:28:41,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820499168] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:41,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:41,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:41,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458580181] [2021-10-13 07:28:41,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:41,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:41,699 INFO L87 Difference]: Start difference. First operand 758 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:42,006 INFO L93 Difference]: Finished difference Result 1707 states and 2404 transitions. [2021-10-13 07:28:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:42,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-10-13 07:28:42,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:42,013 INFO L225 Difference]: With dead ends: 1707 [2021-10-13 07:28:42,013 INFO L226 Difference]: Without dead ends: 970 [2021-10-13 07:28:42,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-13 07:28:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 947. [2021-10-13 07:28:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.3477801268498943) internal successors, (1275), 946 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1275 transitions. [2021-10-13 07:28:42,050 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1275 transitions. Word has length 183 [2021-10-13 07:28:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:42,051 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1275 transitions. [2021-10-13 07:28:42,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1275 transitions. [2021-10-13 07:28:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-13 07:28:42,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:42,056 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 3, 3, 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 07:28:42,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:42,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:42,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1964363198, now seen corresponding path program 1 times [2021-10-13 07:28:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:42,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43758749] [2021-10-13 07:28:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:42,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:42,271 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:42,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:28:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:42,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:42,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-13 07:28:43,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-13 07:28:43,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:43,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43758749] [2021-10-13 07:28:43,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43758749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:43,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:43,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559502806] [2021-10-13 07:28:43,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:43,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:43,651 INFO L87 Difference]: Start difference. First operand 947 states and 1275 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:43,905 INFO L93 Difference]: Finished difference Result 1994 states and 2736 transitions. [2021-10-13 07:28:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 191 [2021-10-13 07:28:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:43,913 INFO L225 Difference]: With dead ends: 1994 [2021-10-13 07:28:43,913 INFO L226 Difference]: Without dead ends: 1068 [2021-10-13 07:28:43,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-13 07:28:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1031. [2021-10-13 07:28:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 1.3339805825242719) internal successors, (1374), 1030 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1374 transitions. [2021-10-13 07:28:43,959 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1374 transitions. Word has length 191 [2021-10-13 07:28:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:43,959 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1374 transitions. [2021-10-13 07:28:43,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1374 transitions. [2021-10-13 07:28:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-10-13 07:28:43,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:43,965 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 5, 5, 4, 4, 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] [2021-10-13 07:28:43,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:44,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:44,179 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1277298294, now seen corresponding path program 1 times [2021-10-13 07:28:44,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:44,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409002304] [2021-10-13 07:28:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:44,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:44,181 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:44,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:28:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:44,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 07:28:45,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 07:28:45,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:45,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409002304] [2021-10-13 07:28:45,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409002304] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:45,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:45,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:45,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667524908] [2021-10-13 07:28:45,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:45,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:45,613 INFO L87 Difference]: Start difference. First operand 1031 states and 1374 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:45,859 INFO L93 Difference]: Finished difference Result 2144 states and 2897 transitions. [2021-10-13 07:28:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-10-13 07:28:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:45,867 INFO L225 Difference]: With dead ends: 2144 [2021-10-13 07:28:45,868 INFO L226 Difference]: Without dead ends: 1134 [2021-10-13 07:28:45,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 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 07:28:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-10-13 07:28:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1118. [2021-10-13 07:28:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 1.3187108325872874) internal successors, (1473), 1117 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1473 transitions. [2021-10-13 07:28:45,920 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1473 transitions. Word has length 229 [2021-10-13 07:28:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:45,921 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1473 transitions. [2021-10-13 07:28:45,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1473 transitions. [2021-10-13 07:28:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-13 07:28:45,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:45,926 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 5, 5, 4, 4, 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] [2021-10-13 07:28:45,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:46,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:46,140 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1247038610, now seen corresponding path program 1 times [2021-10-13 07:28:46,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:46,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334582181] [2021-10-13 07:28:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:46,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:46,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:46,143 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:46,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:28:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:46,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:28:46,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-13 07:28:47,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-13 07:28:48,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:48,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334582181] [2021-10-13 07:28:48,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334582181] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:48,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:48,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 07:28:48,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76270034] [2021-10-13 07:28:48,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:28:48,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:28:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:28:48,034 INFO L87 Difference]: Start difference. First operand 1118 states and 1473 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:48,292 INFO L93 Difference]: Finished difference Result 7066 states and 9285 transitions. [2021-10-13 07:28:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:28:48,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-10-13 07:28:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:48,329 INFO L225 Difference]: With dead ends: 7066 [2021-10-13 07:28:48,329 INFO L226 Difference]: Without dead ends: 5969 [2021-10-13 07:28:48,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:28:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2021-10-13 07:28:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 2210. [2021-10-13 07:28:48,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2209 states have (on average 1.3177908555907651) internal successors, (2911), 2209 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2911 transitions. [2021-10-13 07:28:48,479 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2911 transitions. Word has length 235 [2021-10-13 07:28:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:48,479 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 2911 transitions. [2021-10-13 07:28:48,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2911 transitions. [2021-10-13 07:28:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-10-13 07:28:48,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:48,488 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 5, 5, 4, 4, 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] [2021-10-13 07:28:48,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:48,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:48,701 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:48,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:48,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1618066175, now seen corresponding path program 1 times [2021-10-13 07:28:48,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:48,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221243842] [2021-10-13 07:28:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:48,702 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:48,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:48,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:48,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:28:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:49,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:49,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 07:28:49,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 07:28:50,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:50,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221243842] [2021-10-13 07:28:50,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221243842] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:50,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:50,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:50,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479354484] [2021-10-13 07:28:50,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:50,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:50,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:50,397 INFO L87 Difference]: Start difference. First operand 2210 states and 2911 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:50,697 INFO L93 Difference]: Finished difference Result 4605 states and 6151 transitions. [2021-10-13 07:28:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:50,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 236 [2021-10-13 07:28:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:50,711 INFO L225 Difference]: With dead ends: 4605 [2021-10-13 07:28:50,711 INFO L226 Difference]: Without dead ends: 2416 [2021-10-13 07:28:50,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-10-13 07:28:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2396. [2021-10-13 07:28:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2395 states have (on average 1.3031315240083508) internal successors, (3121), 2395 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3121 transitions. [2021-10-13 07:28:50,822 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3121 transitions. Word has length 236 [2021-10-13 07:28:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:50,823 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 3121 transitions. [2021-10-13 07:28:50,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3121 transitions. [2021-10-13 07:28:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-10-13 07:28:50,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:50,830 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:50,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:51,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:51,044 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1147030576, now seen corresponding path program 1 times [2021-10-13 07:28:51,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:51,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619541034] [2021-10-13 07:28:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:51,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:51,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:51,046 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:28:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:51,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:51,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 425 proven. 16 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-10-13 07:28:52,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 425 proven. 16 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-10-13 07:28:52,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:52,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619541034] [2021-10-13 07:28:52,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619541034] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:52,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [525366392] [2021-10-13 07:28:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:52,959 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:52,961 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:52,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 07:28:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:28:54,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-13 07:28:55,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [525366392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:55,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:28:55,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-10-13 07:28:55,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813010617] [2021-10-13 07:28:55,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:55,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:28:55,512 INFO L87 Difference]: Start difference. First operand 2396 states and 3121 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:55,637 INFO L93 Difference]: Finished difference Result 6399 states and 8328 transitions. [2021-10-13 07:28:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2021-10-13 07:28:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:55,658 INFO L225 Difference]: With dead ends: 6399 [2021-10-13 07:28:55,658 INFO L226 Difference]: Without dead ends: 4024 [2021-10-13 07:28:55,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:28:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-10-13 07:28:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4022. [2021-10-13 07:28:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4022 states, 4021 states have (on average 1.297438448147227) internal successors, (5217), 4021 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 5217 transitions. [2021-10-13 07:28:55,831 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 5217 transitions. Word has length 247 [2021-10-13 07:28:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:55,831 INFO L470 AbstractCegarLoop]: Abstraction has 4022 states and 5217 transitions. [2021-10-13 07:28:55,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 5217 transitions. [2021-10-13 07:28:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-10-13 07:28:55,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:55,841 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:28:55,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:56,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:56,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:56,262 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1153610059, now seen corresponding path program 1 times [2021-10-13 07:28:56,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:56,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757403225] [2021-10-13 07:28:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:56,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:56,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:56,265 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:56,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:28:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:57,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:28:57,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:28:58,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:58,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757403225] [2021-10-13 07:28:58,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757403225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:58,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1303795713] [2021-10-13 07:28:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:58,450 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:58,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:58,451 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:58,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 07:29:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:00,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:29:00,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:29:01,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1303795713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:01,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381745722] [2021-10-13 07:29:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:01,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:01,236 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:29:01,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 07:29:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:02,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:02,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:29:03,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:29:03,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381745722] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:03,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:29:03,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:29:03,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425395288] [2021-10-13 07:29:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:29:03,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:29:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:29:03,693 INFO L87 Difference]: Start difference. First operand 4022 states and 5217 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:04,631 INFO L93 Difference]: Finished difference Result 11574 states and 15146 transitions. [2021-10-13 07:29:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:29:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 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 253 [2021-10-13 07:29:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:04,719 INFO L225 Difference]: With dead ends: 11574 [2021-10-13 07:29:04,719 INFO L226 Difference]: Without dead ends: 7573 [2021-10-13 07:29:04,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 1512 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:29:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2021-10-13 07:29:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 4938. [2021-10-13 07:29:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 1.288434271824995) internal successors, (6361), 4937 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6361 transitions. [2021-10-13 07:29:04,991 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6361 transitions. Word has length 253 [2021-10-13 07:29:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:04,991 INFO L470 AbstractCegarLoop]: Abstraction has 4938 states and 6361 transitions. [2021-10-13 07:29:04,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6361 transitions. [2021-10-13 07:29:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-10-13 07:29:05,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:05,006 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:05,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:05,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:05,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 07:29:05,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:05,657 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:05,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2136379984, now seen corresponding path program 1 times [2021-10-13 07:29:05,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:05,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185676632] [2021-10-13 07:29:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:05,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:05,659 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:05,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:29:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:06,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:29:06,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-10-13 07:29:07,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-10-13 07:29:08,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:08,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185676632] [2021-10-13 07:29:08,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185676632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:08,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:08,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:29:08,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855881670] [2021-10-13 07:29:08,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:08,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:08,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:08,106 INFO L87 Difference]: Start difference. First operand 4938 states and 6361 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:08,443 INFO L93 Difference]: Finished difference Result 8335 states and 10897 transitions. [2021-10-13 07:29:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:29:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 308 [2021-10-13 07:29:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:08,458 INFO L225 Difference]: With dead ends: 8335 [2021-10-13 07:29:08,458 INFO L226 Difference]: Without dead ends: 3066 [2021-10-13 07:29:08,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-10-13 07:29:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2964. [2021-10-13 07:29:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2963 states have (on average 1.2807964900438744) internal successors, (3795), 2963 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3795 transitions. [2021-10-13 07:29:08,576 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3795 transitions. Word has length 308 [2021-10-13 07:29:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:08,576 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 3795 transitions. [2021-10-13 07:29:08,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3795 transitions. [2021-10-13 07:29:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-10-13 07:29:08,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:08,587 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:08,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:08,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:08,804 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1908275985, now seen corresponding path program 1 times [2021-10-13 07:29:08,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:08,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681484291] [2021-10-13 07:29:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:08,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:08,806 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:08,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:29:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:10,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:10,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 812 proven. 17 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-10-13 07:29:10,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 812 proven. 17 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-10-13 07:29:11,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681484291] [2021-10-13 07:29:11,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681484291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [860266016] [2021-10-13 07:29:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:11,382 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:11,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:11,383 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 07:29:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:13,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:29:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-10-13 07:29:14,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-10-13 07:29:14,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [860266016] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:14,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:29:14,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:29:14,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875746597] [2021-10-13 07:29:14,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:14,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:29:14,884 INFO L87 Difference]: Start difference. First operand 2964 states and 3795 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:15,014 INFO L93 Difference]: Finished difference Result 6488 states and 8366 transitions. [2021-10-13 07:29:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:29:15,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 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 312 [2021-10-13 07:29:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:15,030 INFO L225 Difference]: With dead ends: 6488 [2021-10-13 07:29:15,030 INFO L226 Difference]: Without dead ends: 3698 [2021-10-13 07:29:15,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:29:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-10-13 07:29:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2021-10-13 07:29:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 1.287530430078442) internal successors, (4760), 3697 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 4760 transitions. [2021-10-13 07:29:15,261 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 4760 transitions. Word has length 312 [2021-10-13 07:29:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:15,262 INFO L470 AbstractCegarLoop]: Abstraction has 3698 states and 4760 transitions. [2021-10-13 07:29:15,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 4760 transitions. [2021-10-13 07:29:15,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-10-13 07:29:15,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:15,274 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 7, 7, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:15,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:15,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:15,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:15,682 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:15,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1909065204, now seen corresponding path program 1 times [2021-10-13 07:29:15,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:15,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330892893] [2021-10-13 07:29:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:15,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:15,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:15,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:15,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:29:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:17,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:29:17,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-10-13 07:29:17,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-10-13 07:29:18,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:18,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330892893] [2021-10-13 07:29:18,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330892893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:18,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:18,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:29:18,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017353362] [2021-10-13 07:29:18,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:29:18,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:29:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:18,726 INFO L87 Difference]: Start difference. First operand 3698 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:18,797 INFO L93 Difference]: Finished difference Result 7263 states and 9365 transitions. [2021-10-13 07:29:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:29:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2021-10-13 07:29:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:18,806 INFO L225 Difference]: With dead ends: 7263 [2021-10-13 07:29:18,806 INFO L226 Difference]: Without dead ends: 3571 [2021-10-13 07:29:18,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-10-13 07:29:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3545. [2021-10-13 07:29:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 3544 states have (on average 1.2934537246049662) internal successors, (4584), 3544 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4584 transitions. [2021-10-13 07:29:18,958 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4584 transitions. Word has length 318 [2021-10-13 07:29:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:18,958 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 4584 transitions. [2021-10-13 07:29:18,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4584 transitions. [2021-10-13 07:29:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-10-13 07:29:18,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:18,967 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:18,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:19,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:19,185 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:19,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2040881673, now seen corresponding path program 1 times [2021-10-13 07:29:19,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:19,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123087107] [2021-10-13 07:29:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:19,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:19,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:19,187 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:19,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:29:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:20,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:20,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:29:21,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:29:22,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:22,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123087107] [2021-10-13 07:29:22,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123087107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:22,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [61288755] [2021-10-13 07:29:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:22,587 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:22,588 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:22,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 07:29:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:25,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:25,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:29:26,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:29:26,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [61288755] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:26,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428448250] [2021-10-13 07:29:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:26,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:26,900 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:29:26,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 07:29:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:29,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:29,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:29:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-13 07:29:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428448250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:31,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:29:31,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:29:31,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261122909] [2021-10-13 07:29:31,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:31,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:31,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:31,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:31,133 INFO L87 Difference]: Start difference. First operand 3545 states and 4584 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 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 07:29:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:31,473 INFO L93 Difference]: Finished difference Result 10731 states and 13936 transitions. [2021-10-13 07:29:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:29:31,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 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 422 [2021-10-13 07:29:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:31,486 INFO L225 Difference]: With dead ends: 10731 [2021-10-13 07:29:31,486 INFO L226 Difference]: Without dead ends: 7207 [2021-10-13 07:29:31,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2528 GetRequests, 2525 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:29:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7207 states. [2021-10-13 07:29:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7207 to 4641. [2021-10-13 07:29:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4640 states have (on average 1.3155172413793104) internal successors, (6104), 4640 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6104 transitions. [2021-10-13 07:29:31,710 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6104 transitions. Word has length 422 [2021-10-13 07:29:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:31,711 INFO L470 AbstractCegarLoop]: Abstraction has 4641 states and 6104 transitions. [2021-10-13 07:29:31,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 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 07:29:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6104 transitions. [2021-10-13 07:29:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-10-13 07:29:31,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:31,724 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:31,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:31,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:32,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:32,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:32,341 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash -787617399, now seen corresponding path program 1 times [2021-10-13 07:29:32,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:32,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635674162] [2021-10-13 07:29:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:32,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:32,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:32,344 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:29:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:34,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:29:34,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 1486 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2021-10-13 07:29:35,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 1486 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2021-10-13 07:29:36,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:36,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635674162] [2021-10-13 07:29:36,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635674162] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:36,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:36,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:29:36,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512906840] [2021-10-13 07:29:36,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:29:36,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:29:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:36,516 INFO L87 Difference]: Start difference. First operand 4641 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:36,742 INFO L93 Difference]: Finished difference Result 9287 states and 12213 transitions. [2021-10-13 07:29:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:29:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 482 [2021-10-13 07:29:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:36,752 INFO L225 Difference]: With dead ends: 9287 [2021-10-13 07:29:36,753 INFO L226 Difference]: Without dead ends: 4667 [2021-10-13 07:29:36,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2021-10-13 07:29:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4481. [2021-10-13 07:29:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 1.2892857142857144) internal successors, (5776), 4480 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 5776 transitions. [2021-10-13 07:29:36,917 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 5776 transitions. Word has length 482 [2021-10-13 07:29:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:36,917 INFO L470 AbstractCegarLoop]: Abstraction has 4481 states and 5776 transitions. [2021-10-13 07:29:36,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 5776 transitions. [2021-10-13 07:29:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-10-13 07:29:36,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:36,927 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:36,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:37,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:37,149 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1511195565, now seen corresponding path program 1 times [2021-10-13 07:29:37,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:37,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173816117] [2021-10-13 07:29:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:37,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:37,151 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:37,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:29:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:39,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:29:39,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2695 backedges. 1566 proven. 0 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2021-10-13 07:29:40,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2695 backedges. 1566 proven. 0 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2021-10-13 07:29:41,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:41,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173816117] [2021-10-13 07:29:41,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173816117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:41,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:41,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:29:41,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110563354] [2021-10-13 07:29:41,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:29:41,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:29:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:41,734 INFO L87 Difference]: Start difference. First operand 4481 states and 5776 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:41,935 INFO L93 Difference]: Finished difference Result 9517 states and 12487 transitions. [2021-10-13 07:29:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:29:41,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 484 [2021-10-13 07:29:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:41,946 INFO L225 Difference]: With dead ends: 9517 [2021-10-13 07:29:41,947 INFO L226 Difference]: Without dead ends: 5057 [2021-10-13 07:29:41,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-10-13 07:29:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 5025. [2021-10-13 07:29:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 5024 states have (on average 1.2738853503184713) internal successors, (6400), 5024 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6400 transitions. [2021-10-13 07:29:42,217 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6400 transitions. Word has length 484 [2021-10-13 07:29:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:42,218 INFO L470 AbstractCegarLoop]: Abstraction has 5025 states and 6400 transitions. [2021-10-13 07:29:42,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6400 transitions. [2021-10-13 07:29:42,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-10-13 07:29:42,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:42,233 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 17, 16, 14, 14, 12, 12, 10, 10, 10, 10, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:42,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:42,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:42,457 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -983079863, now seen corresponding path program 1 times [2021-10-13 07:29:42,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:42,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845457394] [2021-10-13 07:29:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:42,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:42,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:42,462 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:42,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:29:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:45,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:29:45,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3492 backedges. 2013 proven. 0 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2021-10-13 07:29:46,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3492 backedges. 2013 proven. 0 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2021-10-13 07:29:47,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:47,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845457394] [2021-10-13 07:29:47,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845457394] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:47,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:47,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:29:47,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816381416] [2021-10-13 07:29:47,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:29:47,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:29:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:47,344 INFO L87 Difference]: Start difference. First operand 5025 states and 6400 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 07:29:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:47,563 INFO L93 Difference]: Finished difference Result 9415 states and 11973 transitions. [2021-10-13 07:29:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:29:47,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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) Word has length 546 [2021-10-13 07:29:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:47,575 INFO L225 Difference]: With dead ends: 9415 [2021-10-13 07:29:47,575 INFO L226 Difference]: Without dead ends: 4411 [2021-10-13 07:29:47,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1089 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:47,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-10-13 07:29:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4103. [2021-10-13 07:29:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 1.2184300341296928) internal successors, (4998), 4102 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 4998 transitions. [2021-10-13 07:29:47,733 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 4998 transitions. Word has length 546 [2021-10-13 07:29:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:47,734 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 4998 transitions. [2021-10-13 07:29:47,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 07:29:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 4998 transitions. [2021-10-13 07:29:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2021-10-13 07:29:47,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:47,745 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 22, 21, 19, 19, 17, 17, 15, 15, 15, 15, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 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, 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] [2021-10-13 07:29:47,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:47,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:47,961 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:47,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1839633368, now seen corresponding path program 1 times [2021-10-13 07:29:47,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:47,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178649290] [2021-10-13 07:29:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:47,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:47,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:47,964 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:47,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 07:29:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:51,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-13 07:29:52,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-13 07:29:53,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:53,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178649290] [2021-10-13 07:29:53,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178649290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:53,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537765711] [2021-10-13 07:29:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:53,804 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:53,805 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:53,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-13 07:29:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:58,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:29:58,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-13 07:29:59,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-13 07:30:01,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537765711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:01,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078966079] [2021-10-13 07:30:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:01,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:01,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:01,277 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:30:01,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 07:30:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:05,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:30:05,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-13 07:30:07,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-13 07:30:08,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078966079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:08,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:30:08,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:30:08,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986938566] [2021-10-13 07:30:08,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:30:08,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:30:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:30:08,392 INFO L87 Difference]: Start difference. First operand 4103 states and 4998 transitions. Second operand has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:08,858 INFO L93 Difference]: Finished difference Result 5437 states and 6642 transitions. [2021-10-13 07:30:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:30:08,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 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 726 [2021-10-13 07:30:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:08,859 INFO L225 Difference]: With dead ends: 5437 [2021-10-13 07:30:08,859 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:30:08,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4356 GetRequests, 4349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:30:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:30:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:30:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:30:08,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 726 [2021-10-13 07:30:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:08,866 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:30:08,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:30:08,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:30:08,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:30:08,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:09,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:09,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-10-13 07:30:09,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:30:09,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:30:09,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:09,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:09,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:09,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:10,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:11,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:14,884 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 537) no Hoare annotation was computed. [2021-10-13 07:30:14,884 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 500) no Hoare annotation was computed. [2021-10-13 07:30:14,884 INFO L857 garLoopResultBuilder]: For program point L531-1(lines 531 537) no Hoare annotation was computed. [2021-10-13 07:30:14,884 INFO L857 garLoopResultBuilder]: For program point L498-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:30:14,885 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 547) no Hoare annotation was computed. [2021-10-13 07:30:14,885 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 558) no Hoare annotation was computed. [2021-10-13 07:30:14,885 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 569) no Hoare annotation was computed. [2021-10-13 07:30:14,885 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 580) no Hoare annotation was computed. [2021-10-13 07:30:14,885 INFO L857 garLoopResultBuilder]: For program point L434(lines 434 437) no Hoare annotation was computed. [2021-10-13 07:30:14,886 INFO L857 garLoopResultBuilder]: For program point L335(lines 335 373) no Hoare annotation was computed. [2021-10-13 07:30:14,886 INFO L853 garLoopResultBuilder]: At program point L203(lines 199 548) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) .cse5 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2021-10-13 07:30:14,886 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 580) the Hoare annotation is: false [2021-10-13 07:30:14,886 INFO L860 garLoopResultBuilder]: At program point L600(lines 99 601) the Hoare annotation is: true [2021-10-13 07:30:14,887 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 536) no Hoare annotation was computed. [2021-10-13 07:30:14,887 INFO L853 garLoopResultBuilder]: At program point L402(lines 393 411) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,887 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 546) no Hoare annotation was computed. [2021-10-13 07:30:14,887 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 557) no Hoare annotation was computed. [2021-10-13 07:30:14,887 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 568) no Hoare annotation was computed. [2021-10-13 07:30:14,888 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 579) no Hoare annotation was computed. [2021-10-13 07:30:14,888 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 372) no Hoare annotation was computed. [2021-10-13 07:30:14,888 INFO L857 garLoopResultBuilder]: For program point L338-1(lines 338 372) no Hoare annotation was computed. [2021-10-13 07:30:14,888 INFO L860 garLoopResultBuilder]: At program point L206(lines 205 546) the Hoare annotation is: true [2021-10-13 07:30:14,888 INFO L853 garLoopResultBuilder]: At program point L173(lines 169 558) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,889 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 569) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2021-10-13 07:30:14,889 INFO L857 garLoopResultBuilder]: For program point L471(lines 471 473) no Hoare annotation was computed. [2021-10-13 07:30:14,889 INFO L857 garLoopResultBuilder]: For program point L405(lines 405 407) no Hoare annotation was computed. [2021-10-13 07:30:14,889 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 369) no Hoare annotation was computed. [2021-10-13 07:30:14,889 INFO L860 garLoopResultBuilder]: At program point L208(lines 207 546) the Hoare annotation is: true [2021-10-13 07:30:14,890 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 556) no Hoare annotation was computed. [2021-10-13 07:30:14,890 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 567) no Hoare annotation was computed. [2021-10-13 07:30:14,890 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 578) no Hoare annotation was computed. [2021-10-13 07:30:14,890 INFO L857 garLoopResultBuilder]: For program point L605(lines 605 607) no Hoare annotation was computed. [2021-10-13 07:30:14,890 INFO L857 garLoopResultBuilder]: For program point L605-2(lines 605 607) no Hoare annotation was computed. [2021-10-13 07:30:14,890 INFO L857 garLoopResultBuilder]: For program point L506(lines 506 509) no Hoare annotation was computed. [2021-10-13 07:30:14,891 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 277) no Hoare annotation was computed. [2021-10-13 07:30:14,891 INFO L857 garLoopResultBuilder]: For program point L275-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:30:14,891 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 316) no Hoare annotation was computed. [2021-10-13 07:30:14,891 INFO L857 garLoopResultBuilder]: For program point L309-2(lines 309 316) no Hoare annotation was computed. [2021-10-13 07:30:14,891 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 254) no Hoare annotation was computed. [2021-10-13 07:30:14,891 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 555) no Hoare annotation was computed. [2021-10-13 07:30:14,892 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 566) no Hoare annotation was computed. [2021-10-13 07:30:14,892 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 577) no Hoare annotation was computed. [2021-10-13 07:30:14,892 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 367) no Hoare annotation was computed. [2021-10-13 07:30:14,892 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 248) no Hoare annotation was computed. [2021-10-13 07:30:14,892 INFO L853 garLoopResultBuilder]: At program point L212(lines 106 579) the Hoare annotation is: false [2021-10-13 07:30:14,893 INFO L853 garLoopResultBuilder]: At program point L179(lines 175 556) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,893 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 567) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,893 INFO L860 garLoopResultBuilder]: At program point L610(lines 12 612) the Hoare annotation is: true [2021-10-13 07:30:14,893 INFO L853 garLoopResultBuilder]: At program point L544(lines 100 599) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse10 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse12 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse14 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse15 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not .cse4)) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32)))) (.cse13 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse4) (and .cse9 .cse0 .cse3) (and .cse7 .cse10 .cse8 .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse4) (and .cse11 .cse4 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse12 .cse3 .cse5) (and .cse11 .cse1 .cse4 .cse5) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse10 .cse4 .cse5) (and .cse12 .cse8 .cse5 .cse13) (and .cse14 .cse8 .cse4 .cse5 .cse13) (and .cse11 .cse4 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse2) (and (or (and .cse15 .cse8 .cse4) (and .cse15 .cse2)) .cse5 .cse13) (and .cse14 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse9 .cse0 .cse8 .cse13) (and .cse0 .cse15 .cse2 .cse3) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8 .cse4 .cse5 .cse13) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5)))) [2021-10-13 07:30:14,894 INFO L857 garLoopResultBuilder]: For program point L445(lines 445 447) no Hoare annotation was computed. [2021-10-13 07:30:14,894 INFO L857 garLoopResultBuilder]: For program point L313(lines 313 315) no Hoare annotation was computed. [2021-10-13 07:30:14,894 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 554) no Hoare annotation was computed. [2021-10-13 07:30:14,894 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 565) no Hoare annotation was computed. [2021-10-13 07:30:14,894 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 576) no Hoare annotation was computed. [2021-10-13 07:30:14,895 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 351) no Hoare annotation was computed. [2021-10-13 07:30:14,895 INFO L857 garLoopResultBuilder]: For program point L347-2(lines 347 351) no Hoare annotation was computed. [2021-10-13 07:30:14,895 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:30:14,895 INFO L857 garLoopResultBuilder]: For program point L480(lines 480 482) no Hoare annotation was computed. [2021-10-13 07:30:14,895 INFO L857 garLoopResultBuilder]: For program point L381(lines 381 413) no Hoare annotation was computed. [2021-10-13 07:30:14,895 INFO L857 garLoopResultBuilder]: For program point L514(lines 514 516) no Hoare annotation was computed. [2021-10-13 07:30:14,896 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 457) no Hoare annotation was computed. [2021-10-13 07:30:14,896 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 388) no Hoare annotation was computed. [2021-10-13 07:30:14,896 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:30:14,896 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 553) no Hoare annotation was computed. [2021-10-13 07:30:14,896 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 564) no Hoare annotation was computed. [2021-10-13 07:30:14,896 INFO L857 garLoopResultBuilder]: For program point L217-2(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:30:14,897 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 575) no Hoare annotation was computed. [2021-10-13 07:30:14,897 INFO L857 garLoopResultBuilder]: For program point L581(lines 581 597) no Hoare annotation was computed. [2021-10-13 07:30:14,897 INFO L853 garLoopResultBuilder]: At program point L515(lines 73 611) the Hoare annotation is: false [2021-10-13 07:30:14,897 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:30:14,897 INFO L853 garLoopResultBuilder]: At program point L185(lines 181 554) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) [2021-10-13 07:30:14,898 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 565) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,898 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 88) no Hoare annotation was computed. [2021-10-13 07:30:14,898 INFO L857 garLoopResultBuilder]: For program point L86-2(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:30:14,898 INFO L857 garLoopResultBuilder]: For program point L582(lines 582 596) no Hoare annotation was computed. [2021-10-13 07:30:14,898 INFO L857 garLoopResultBuilder]: For program point L483(lines 483 487) no Hoare annotation was computed. [2021-10-13 07:30:14,899 INFO L857 garLoopResultBuilder]: For program point L483-2(lines 483 487) no Hoare annotation was computed. [2021-10-13 07:30:14,899 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 588) no Hoare annotation was computed. [2021-10-13 07:30:14,899 INFO L857 garLoopResultBuilder]: For program point L517(lines 517 519) no Hoare annotation was computed. [2021-10-13 07:30:14,899 INFO L857 garLoopResultBuilder]: For program point L583-2(lines 582 596) no Hoare annotation was computed. [2021-10-13 07:30:14,899 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 552) no Hoare annotation was computed. [2021-10-13 07:30:14,899 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 563) no Hoare annotation was computed. [2021-10-13 07:30:14,900 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 574) no Hoare annotation was computed. [2021-10-13 07:30:14,900 INFO L857 garLoopResultBuilder]: For program point L452(lines 452 454) no Hoare annotation was computed. [2021-10-13 07:30:14,900 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 575) the Hoare annotation is: false [2021-10-13 07:30:14,900 INFO L857 garLoopResultBuilder]: For program point L585(lines 585 587) no Hoare annotation was computed. [2021-10-13 07:30:14,900 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 294) no Hoare annotation was computed. [2021-10-13 07:30:14,900 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 363) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 551) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 562) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 573) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-13 07:30:14,901 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 73 611) no Hoare annotation was computed. [2021-10-13 07:30:14,902 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 525) no Hoare annotation was computed. [2021-10-13 07:30:14,902 INFO L857 garLoopResultBuilder]: For program point L521-2(lines 521 525) no Hoare annotation was computed. [2021-10-13 07:30:14,902 INFO L853 garLoopResultBuilder]: At program point L356(lines 332 374) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,902 INFO L853 garLoopResultBuilder]: At program point L191(lines 187 552) the Hoare annotation is: (let ((.cse6 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse5 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 (not .cse6)) (and (or (and .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) .cse6 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2021-10-13 07:30:14,903 INFO L853 garLoopResultBuilder]: At program point L158(lines 154 563) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,903 INFO L853 garLoopResultBuilder]: At program point L125(lines 124 573) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32)))) (.cse5 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse6 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse4 .cse5 .cse6) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6))) [2021-10-13 07:30:14,903 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 94) no Hoare annotation was computed. [2021-10-13 07:30:14,903 INFO L857 garLoopResultBuilder]: For program point L423(lines 423 425) no Hoare annotation was computed. [2021-10-13 07:30:14,903 INFO L853 garLoopResultBuilder]: At program point L390(lines 381 413) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,904 INFO L857 garLoopResultBuilder]: For program point L291(lines 291 293) no Hoare annotation was computed. [2021-10-13 07:30:14,904 INFO L857 garLoopResultBuilder]: For program point L291-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:30:14,904 INFO L860 garLoopResultBuilder]: At program point L622(lines 613 624) the Hoare annotation is: true [2021-10-13 07:30:14,904 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 360) no Hoare annotation was computed. [2021-10-13 07:30:14,904 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 550) no Hoare annotation was computed. [2021-10-13 07:30:14,904 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 561) no Hoare annotation was computed. [2021-10-13 07:30:14,905 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 572) no Hoare annotation was computed. [2021-10-13 07:30:14,905 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:30:14,905 INFO L857 garLoopResultBuilder]: For program point L590(lines 590 594) no Hoare annotation was computed. [2021-10-13 07:30:14,905 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 330) no Hoare annotation was computed. [2021-10-13 07:30:14,905 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 262) no Hoare annotation was computed. [2021-10-13 07:30:14,905 INFO L857 garLoopResultBuilder]: For program point L326-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 238) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L393(lines 393 411) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L493(lines 493 496) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 400) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 232) no Hoare annotation was computed. [2021-10-13 07:30:14,906 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 549) no Hoare annotation was computed. [2021-10-13 07:30:14,907 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 560) no Hoare annotation was computed. [2021-10-13 07:30:14,907 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 571) no Hoare annotation was computed. [2021-10-13 07:30:14,907 INFO L853 garLoopResultBuilder]: At program point L197(lines 193 550) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) .cse4 .cse5 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse5))) [2021-10-13 07:30:14,907 INFO L853 garLoopResultBuilder]: At program point L164(lines 160 561) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:30:14,907 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:30:14,908 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 609) no Hoare annotation was computed. [2021-10-13 07:30:14,908 INFO L857 garLoopResultBuilder]: For program point L462(lines 462 464) no Hoare annotation was computed. [2021-10-13 07:30:14,908 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 302) no Hoare annotation was computed. [2021-10-13 07:30:14,908 INFO L857 garLoopResultBuilder]: For program point L298-2(lines 298 302) no Hoare annotation was computed. [2021-10-13 07:30:14,908 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 548) no Hoare annotation was computed. [2021-10-13 07:30:14,908 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 559) no Hoare annotation was computed. [2021-10-13 07:30:14,909 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 570) no Hoare annotation was computed. [2021-10-13 07:30:14,909 INFO L853 garLoopResultBuilder]: At program point L100-2(lines 100 599) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse10 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse12 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse14 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse15 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not .cse4)) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32)))) (.cse13 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse4) (and .cse9 .cse0 .cse3) (and .cse7 .cse10 .cse8 .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse4) (and .cse11 .cse4 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse12 .cse3 .cse5) (and .cse11 .cse1 .cse4 .cse5) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse10 .cse4 .cse5) (and .cse12 .cse8 .cse5 .cse13) (and .cse14 .cse8 .cse4 .cse5 .cse13) (and .cse11 .cse4 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse2) (and (or (and .cse15 .cse8 .cse4) (and .cse15 .cse2)) .cse5 .cse13) (and .cse14 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse9 .cse0 .cse8 .cse13) (and .cse0 .cse15 .cse2 .cse3) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8 .cse4 .cse5 .cse13) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5)))) [2021-10-13 07:30:14,909 INFO L857 garLoopResultBuilder]: For program point L431-1(lines 431 439) no Hoare annotation was computed. [2021-10-13 07:30:14,909 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 236) no Hoare annotation was computed. [2021-10-13 07:30:14,910 INFO L853 garLoopResultBuilder]: At program point L167(lines 166 559) the Hoare annotation is: (let ((.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not .cse2)) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:30:14,910 INFO L853 garLoopResultBuilder]: At program point L134(lines 127 572) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (and .cse0 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) .cse1))) [2021-10-13 07:30:14,910 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:30:14,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:30:14,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:30:14 BoogieIcfgContainer [2021-10-13 07:30:14,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:30:14,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:30:14,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:30:14,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:30:14,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:31" (3/4) ... [2021-10-13 07:30:14,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:30:14,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:30:14,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:30:14,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:30:14,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:30:15,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:30:15,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:30:15,142 INFO L168 Benchmark]: Toolchain (without parser) took 105191.44 ms. Allocated memory was 56.6 MB in the beginning and 664.8 MB in the end (delta: 608.2 MB). Free memory was 33.8 MB in the beginning and 540.6 MB in the end (delta: -506.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,143 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory is still 36.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:30:15,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.57 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 36.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.21 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 33.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,145 INFO L168 Benchmark]: Boogie Preprocessor took 78.72 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 31.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,146 INFO L168 Benchmark]: RCFGBuilder took 1043.74 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 48.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,146 INFO L168 Benchmark]: TraceAbstraction took 103322.63 ms. Allocated memory was 69.2 MB in the beginning and 664.8 MB in the end (delta: 595.6 MB). Free memory was 48.1 MB in the beginning and 551.0 MB in the end (delta: -502.9 MB). Peak memory consumption was 527.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,147 INFO L168 Benchmark]: Witness Printer took 186.94 ms. Allocated memory is still 664.8 MB. Free memory was 551.0 MB in the beginning and 540.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:15,151 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 56.6 MB. Free memory is still 36.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 501.57 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 36.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.21 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 33.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.72 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 31.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1043.74 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 48.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 103322.63 ms. Allocated memory was 69.2 MB in the beginning and 664.8 MB in the end (delta: 595.6 MB). Free memory was 48.1 MB in the beginning and 551.0 MB in the end (delta: -502.9 MB). Peak memory consumption was 527.2 MB. Max. memory is 16.1 GB. * Witness Printer took 186.94 ms. Allocated memory is still 664.8 MB. Free memory was 551.0 MB in the beginning and 540.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 609]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 103223.3ms, OverallIterations: 23, TraceHistogramMax: 24, EmptinessCheckTime: 170.0ms, AutomataDifference: 5915.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5394.4ms, InitialAbstractionConstructionTime: 16.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4985 SDtfs, 3858 SDslu, 5603 SDs, 0 SdLazy, 3300 SolverSat, 643 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2788.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18492 GetRequests, 18433 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 248.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5025occurred in iteration=21, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2329.6ms AutomataMinimizationTime, 23 MinimizatonAttempts, 9741 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 196 NumberOfFragments, 1297 HoareAnnotationTreeSize, 28 FomulaSimplifications, 42353 FormulaSimplificationTreeSizeReduction, 1711.9ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 16702 FormulaSimplificationTreeSizeReductionInter, 3666.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 564.5ms SsaConstructionTime, 2452.2ms SatisfiabilityAnalysisTime, 37651.9ms InterpolantComputationTime, 9266 NumberOfCodeBlocks, 9266 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 18470 ConstructedInterpolants, 0 QuantifiedInterpolants, 24878 SizeOfPredicates, 16 NumberOfNonLiveVariables, 10961 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 62 InterpolantComputations, 40 PerfectInterpolantSequences, 86208/86628 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: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((3bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(4bv32 == blastFlag) && 3bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((3bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 3bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32)) || (((((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) || (8640bv32 == s__state && s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((3bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || ((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: (((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8496bv32 == s__state)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) || ((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(8496bv32 == s__state)) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: (((((((!(8497bv32 == s__state) && 3bv32 == blastFlag) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(8496bv32 == s__state)) && !(s__hit == 0bv32)) || (((((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) || (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(8496bv32 == s__state))) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: (((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) || (((((((!(8497bv32 == s__state) && !(4bv32 == blastFlag)) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) || ((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && blastFlag == 0bv32) && !(8466bv32 == s__state)) && !(8496bv32 == s__state)) - InvariantResult [Line: 393]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 332]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: ((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && blastFlag == 1bv32) || (((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: ((((((8576bv32 == s__s3__tmp__next_state___0 && !(8497bv32 == s__state)) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((((((8576bv32 == s__s3__tmp__next_state___0 && !(8497bv32 == s__state)) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 381]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((((((!(8497bv32 == s__state) && 3bv32 == blastFlag) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(8496bv32 == s__state)) && !(s__hit == 0bv32)) || (((((((!(8497bv32 == s__state) && 3bv32 == blastFlag) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8496bv32 == s__state)) && !(8497bv32 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: (((!(s__s3__tmp__next_state___0 == 8496bv32) && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0) - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((3bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(4bv32 == blastFlag) && 3bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((3bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 3bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32)) || (((((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) || (8640bv32 == s__state && s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((3bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (8464bv32 == s__state && blastFlag == 0bv32)) || ((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:30:15,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddd837f-2516-4120-914b-62505c5c8a27/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...