./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan --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 310063ef643a90e947dd66ba142cc8ae546f077a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan --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 310063ef643a90e947dd66ba142cc8ae546f077a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:50:34,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:50:34,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:50:34,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:50:34,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:50:34,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:50:34,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:50:34,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:50:34,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:50:34,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:50:34,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:50:34,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:50:34,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:50:34,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:50:34,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:50:34,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:50:34,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:50:34,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:50:34,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:50:34,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:50:34,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:50:34,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:50:34,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:50:34,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:50:34,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:50:34,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:50:34,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:50:34,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:50:34,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:50:34,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:50:34,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:50:34,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:50:34,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:50:34,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:50:34,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:50:34,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:50:34,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:50:34,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:50:34,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:50:34,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:50:34,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:50:34,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:50:34,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:50:34,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:50:34,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:50:34,435 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:50:34,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:50:34,436 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:50:34,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:50:34,437 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:50:34,437 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:50:34,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:50:34,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:50:34,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:50:34,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:50:34,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:50:34,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:50:34,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:50:34,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:50:34,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:50:34,440 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-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 310063ef643a90e947dd66ba142cc8ae546f077a [2020-12-09 15:50:34,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:50:34,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:50:34,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:50:34,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:50:34,639 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:50:34,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-12-09 15:50:34,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/115dd555b/c65d955e4fbd4485a91796343a60d891/FLAG5588fe564 [2020-12-09 15:50:35,062 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:50:35,063 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-12-09 15:50:35,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/115dd555b/c65d955e4fbd4485a91796343a60d891/FLAG5588fe564 [2020-12-09 15:50:35,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/115dd555b/c65d955e4fbd4485a91796343a60d891 [2020-12-09 15:50:35,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:50:35,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:50:35,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:50:35,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:50:35,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:50:35,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d404dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35, skipping insertion in model container [2020-12-09 15:50:35,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:50:35,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:50:35,287 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2020-12-09 15:50:35,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:50:35,303 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:50:35,336 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2020-12-09 15:50:35,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:50:35,348 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:50:35,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35 WrapperNode [2020-12-09 15:50:35,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:50:35,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:50:35,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:50:35,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:50:35,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:50:35,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:50:35,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:50:35,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:50:35,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... [2020-12-09 15:50:35,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:50:35,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:50:35,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:50:35,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:50:35,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:50:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:50:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:50:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:50:35,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:50:35,579 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 15:50:35,917 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-09 15:50:35,918 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-09 15:50:36,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:50:36,223 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 15:50:36,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:50:36 BoogieIcfgContainer [2020-12-09 15:50:36,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:50:36,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:50:36,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:50:36,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:50:36,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:50:35" (1/3) ... [2020-12-09 15:50:36,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db6f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:50:36, skipping insertion in model container [2020-12-09 15:50:36,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:35" (2/3) ... [2020-12-09 15:50:36,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db6f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:50:36, skipping insertion in model container [2020-12-09 15:50:36,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:50:36" (3/3) ... [2020-12-09 15:50:36,231 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2020-12-09 15:50:36,241 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:50:36,244 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 15:50:36,254 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 15:50:36,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:50:36,272 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:50:36,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:50:36,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:50:36,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:50:36,273 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:50:36,273 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:50:36,273 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:50:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-12-09 15:50:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 15:50:36,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:36,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:36,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2042302473, now seen corresponding path program 1 times [2020-12-09 15:50:36,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:36,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811438151] [2020-12-09 15:50:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:50:36,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811438151] [2020-12-09 15:50:36,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:36,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:50:36,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537080387] [2020-12-09 15:50:36,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:36,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:36,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:36,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:36,435 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-12-09 15:50:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:36,538 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2020-12-09 15:50:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:36,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 15:50:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:36,546 INFO L225 Difference]: With dead ends: 169 [2020-12-09 15:50:36,546 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 15:50:36,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 15:50:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-09 15:50:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-09 15:50:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2020-12-09 15:50:36,575 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2020-12-09 15:50:36,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:36,575 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2020-12-09 15:50:36,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:36,576 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2020-12-09 15:50:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 15:50:36,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:36,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:36,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:50:36,577 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -585412389, now seen corresponding path program 1 times [2020-12-09 15:50:36,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:36,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192488738] [2020-12-09 15:50:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:50:36,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192488738] [2020-12-09 15:50:36,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:36,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:36,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859115936] [2020-12-09 15:50:36,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:36,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:36,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:36,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:36,632 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2020-12-09 15:50:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:36,730 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2020-12-09 15:50:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:36,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-09 15:50:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:36,731 INFO L225 Difference]: With dead ends: 178 [2020-12-09 15:50:36,731 INFO L226 Difference]: Without dead ends: 98 [2020-12-09 15:50:36,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-09 15:50:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-09 15:50:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 15:50:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2020-12-09 15:50:36,739 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2020-12-09 15:50:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:36,739 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2020-12-09 15:50:36,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2020-12-09 15:50:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 15:50:36,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:36,741 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:36,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:50:36,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:36,741 INFO L82 PathProgramCache]: Analyzing trace with hash -162731940, now seen corresponding path program 1 times [2020-12-09 15:50:36,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:36,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994155638] [2020-12-09 15:50:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:50:36,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994155638] [2020-12-09 15:50:36,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:36,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:36,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192157515] [2020-12-09 15:50:36,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:36,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:36,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:36,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:36,788 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2020-12-09 15:50:36,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:36,865 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2020-12-09 15:50:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:36,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 15:50:36,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:36,866 INFO L225 Difference]: With dead ends: 206 [2020-12-09 15:50:36,866 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 15:50:36,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 15:50:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-12-09 15:50:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-09 15:50:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2020-12-09 15:50:36,873 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2020-12-09 15:50:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:36,874 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2020-12-09 15:50:36,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2020-12-09 15:50:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-09 15:50:36,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:36,875 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:36,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:50:36,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:36,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:36,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1528738895, now seen corresponding path program 1 times [2020-12-09 15:50:36,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:36,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847111570] [2020-12-09 15:50:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:50:36,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847111570] [2020-12-09 15:50:36,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212143194] [2020-12-09 15:50:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:50:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:36,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:50:36,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 15:50:37,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 15:50:37,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:50:37,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2020-12-09 15:50:37,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764034034] [2020-12-09 15:50:37,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:50:37,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:50:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:37,157 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand 6 states. [2020-12-09 15:50:37,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:37,393 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2020-12-09 15:50:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:50:37,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-09 15:50:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:37,395 INFO L225 Difference]: With dead ends: 312 [2020-12-09 15:50:37,395 INFO L226 Difference]: Without dead ends: 203 [2020-12-09 15:50:37,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-09 15:50:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2020-12-09 15:50:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-09 15:50:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 255 transitions. [2020-12-09 15:50:37,405 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 255 transitions. Word has length 52 [2020-12-09 15:50:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:37,406 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 255 transitions. [2020-12-09 15:50:37,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:50:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 255 transitions. [2020-12-09 15:50:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-09 15:50:37,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:37,407 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:37,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:50:37,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:37,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1766247416, now seen corresponding path program 1 times [2020-12-09 15:50:37,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:37,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72543891] [2020-12-09 15:50:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 15:50:37,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72543891] [2020-12-09 15:50:37,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:37,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:37,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655203511] [2020-12-09 15:50:37,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:37,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:37,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:37,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:37,662 INFO L87 Difference]: Start difference. First operand 186 states and 255 transitions. Second operand 3 states. [2020-12-09 15:50:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:37,762 INFO L93 Difference]: Finished difference Result 390 states and 543 transitions. [2020-12-09 15:50:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:37,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-09 15:50:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:37,764 INFO L225 Difference]: With dead ends: 390 [2020-12-09 15:50:37,765 INFO L226 Difference]: Without dead ends: 207 [2020-12-09 15:50:37,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-12-09 15:50:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-12-09 15:50:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-09 15:50:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2020-12-09 15:50:37,778 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 67 [2020-12-09 15:50:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:37,778 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2020-12-09 15:50:37,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2020-12-09 15:50:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-09 15:50:37,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:37,781 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:37,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 15:50:37,781 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:37,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1272301083, now seen corresponding path program 1 times [2020-12-09 15:50:37,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:37,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762948144] [2020-12-09 15:50:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 15:50:37,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762948144] [2020-12-09 15:50:37,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593915598] [2020-12-09 15:50:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:50:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 15:50:37,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 15:50:37,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:38,055 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 15:50:38,055 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 15:50:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-12-09 15:50:38,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2088973502] [2020-12-09 15:50:38,108 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2020-12-09 15:50:38,108 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 15:50:38,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 15:50:38,115 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 15:50:38,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 15:50:38,490 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-12-09 15:50:39,228 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 181 [2020-12-09 15:50:39,832 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) 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:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2020-12-09 15:50:39,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 15:50:39,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 3] total 7 [2020-12-09 15:50:39,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694739398] [2020-12-09 15:50:39,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 15:50:39,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:39,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 15:50:39,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:50:39,835 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand 8 states. [2020-12-09 15:50:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:39,891 INFO L93 Difference]: Finished difference Result 650 states and 874 transitions. [2020-12-09 15:50:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:50:39,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-12-09 15:50:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:39,896 INFO L225 Difference]: With dead ends: 650 [2020-12-09 15:50:39,896 INFO L226 Difference]: Without dead ends: 648 [2020-12-09 15:50:39,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:50:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-12-09 15:50:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 567. [2020-12-09 15:50:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-12-09 15:50:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 776 transitions. [2020-12-09 15:50:39,917 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 776 transitions. Word has length 85 [2020-12-09 15:50:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:39,918 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 776 transitions. [2020-12-09 15:50:39,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 15:50:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 776 transitions. [2020-12-09 15:50:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-09 15:50:39,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:39,922 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:40,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:50:40,126 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:40,126 INFO L82 PathProgramCache]: Analyzing trace with hash 863184304, now seen corresponding path program 1 times [2020-12-09 15:50:40,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:40,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579167291] [2020-12-09 15:50:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-12-09 15:50:40,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579167291] [2020-12-09 15:50:40,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:40,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:40,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536647372] [2020-12-09 15:50:40,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:40,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:40,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:40,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:40,302 INFO L87 Difference]: Start difference. First operand 567 states and 776 transitions. Second operand 3 states. [2020-12-09 15:50:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:40,430 INFO L93 Difference]: Finished difference Result 1262 states and 1784 transitions. [2020-12-09 15:50:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:40,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-09 15:50:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:40,434 INFO L225 Difference]: With dead ends: 1262 [2020-12-09 15:50:40,434 INFO L226 Difference]: Without dead ends: 695 [2020-12-09 15:50:40,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-12-09 15:50:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 630. [2020-12-09 15:50:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-12-09 15:50:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 860 transitions. [2020-12-09 15:50:40,448 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 860 transitions. Word has length 143 [2020-12-09 15:50:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:40,448 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 860 transitions. [2020-12-09 15:50:40,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 860 transitions. [2020-12-09 15:50:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-09 15:50:40,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:40,450 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:40,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-12-09 15:50:40,450 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:40,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1241635124, now seen corresponding path program 2 times [2020-12-09 15:50:40,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:40,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279668790] [2020-12-09 15:50:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-12-09 15:50:40,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279668790] [2020-12-09 15:50:40,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:40,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:40,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201095918] [2020-12-09 15:50:40,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:40,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:40,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:40,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:40,491 INFO L87 Difference]: Start difference. First operand 630 states and 860 transitions. Second operand 3 states. [2020-12-09 15:50:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:40,610 INFO L93 Difference]: Finished difference Result 1450 states and 2062 transitions. [2020-12-09 15:50:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:40,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-12-09 15:50:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:40,613 INFO L225 Difference]: With dead ends: 1450 [2020-12-09 15:50:40,613 INFO L226 Difference]: Without dead ends: 772 [2020-12-09 15:50:40,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-12-09 15:50:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 744. [2020-12-09 15:50:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-12-09 15:50:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1004 transitions. [2020-12-09 15:50:40,639 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1004 transitions. Word has length 152 [2020-12-09 15:50:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:40,640 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1004 transitions. [2020-12-09 15:50:40,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1004 transitions. [2020-12-09 15:50:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-09 15:50:40,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:40,643 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 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] [2020-12-09 15:50:40,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-12-09 15:50:40,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:40,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1814099647, now seen corresponding path program 1 times [2020-12-09 15:50:40,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:40,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469330823] [2020-12-09 15:50:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-12-09 15:50:40,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469330823] [2020-12-09 15:50:40,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:40,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:40,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368628484] [2020-12-09 15:50:40,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:40,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:50:40,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:40,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:40,741 INFO L87 Difference]: Start difference. First operand 744 states and 1004 transitions. Second operand 3 states. [2020-12-09 15:50:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:40,764 INFO L93 Difference]: Finished difference Result 1227 states and 1658 transitions. [2020-12-09 15:50:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:40,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-09 15:50:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:40,768 INFO L225 Difference]: With dead ends: 1227 [2020-12-09 15:50:40,768 INFO L226 Difference]: Without dead ends: 744 [2020-12-09 15:50:40,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-09 15:50:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2020-12-09 15:50:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-12-09 15:50:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1002 transitions. [2020-12-09 15:50:40,787 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1002 transitions. Word has length 163 [2020-12-09 15:50:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:40,787 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1002 transitions. [2020-12-09 15:50:40,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1002 transitions. [2020-12-09 15:50:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-12-09 15:50:40,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:40,789 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:40,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-12-09 15:50:40,789 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:40,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1020485354, now seen corresponding path program 1 times [2020-12-09 15:50:40,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:50:40,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473079790] [2020-12-09 15:50:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:50:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 15:50:40,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 15:50:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 15:50:40,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 15:50:40,906 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 15:50:40,906 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 15:50:40,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-12-09 15:50:40,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:50:40 BoogieIcfgContainer [2020-12-09 15:50:40,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:50:40,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:50:40,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:50:40,990 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:50:40,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:50:36" (3/4) ... [2020-12-09 15:50:40,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 15:50:40,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:50:40,993 INFO L168 Benchmark]: Toolchain (without parser) took 5905.87 ms. Allocated memory was 113.2 MB in the beginning and 251.7 MB in the end (delta: 138.4 MB). Free memory was 75.4 MB in the beginning and 107.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 104.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:50:40,994 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 113.2 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:50:40,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.05 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 85.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:50:40,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 82.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:50:40,995 INFO L168 Benchmark]: Boogie Preprocessor took 33.74 ms. Allocated memory is still 113.2 MB. Free memory was 82.9 MB in the beginning and 80.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:50:40,995 INFO L168 Benchmark]: RCFGBuilder took 806.26 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 80.8 MB in the beginning and 108.3 MB in the end (delta: -27.5 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2020-12-09 15:50:40,996 INFO L168 Benchmark]: TraceAbstraction took 4762.70 ms. Allocated memory was 144.7 MB in the beginning and 251.7 MB in the end (delta: 107.0 MB). Free memory was 107.3 MB in the beginning and 108.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 106.8 MB. Max. memory is 16.1 GB. [2020-12-09 15:50:40,996 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 251.7 MB. Free memory was 108.3 MB in the beginning and 107.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:50:40,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 113.2 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.05 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 85.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 82.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.74 ms. Allocated memory is still 113.2 MB. Free memory was 82.9 MB in the beginning and 80.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 806.26 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 80.8 MB in the beginning and 108.3 MB in the end (delta: -27.5 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4762.70 ms. Allocated memory was 144.7 MB in the beginning and 251.7 MB in the end (delta: 107.0 MB). Free memory was 107.3 MB in the beginning and 108.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 106.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.96 ms. Allocated memory is still 251.7 MB. Free memory was 108.3 MB in the beginning and 107.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 610]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseXor at line 358. Possible FailurePath: [L619] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND FALSE !(s__info_callback != 0) [L78] COND FALSE !(s__ctx__info_callback != 0) [L84] s__in_handshake = s__in_handshake + 1 [L85] COND TRUE tmp___1 - 12288 [L86] COND FALSE !(tmp___2 - 16384) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND FALSE !(cb != 0) [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND TRUE blastFlag == 3 [L326] blastFlag = 4 [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND FALSE !(blastFlag == 5) [L353] COND FALSE !(ret <= 0) [L358] s__state = ag_X ^ ag_Y [L359] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND FALSE !(blastFlag == 3) [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND TRUE blastFlag == 5 [L610] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 11, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1223 SDtfs, 754 SDslu, 1098 SDs, 0 SdLazy, 895 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=744occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 197 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1049 NumberOfCodeBlocks, 1049 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1009 ConstructedInterpolants, 0 QuantifiedInterpolants, 309017 SizeOfPredicates, 2 NumberOfNonLiveVariables, 418 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 1708/1967 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:50:42,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:50:42,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:50:42,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:50:42,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:50:42,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:50:42,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:50:42,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:50:42,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:50:42,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:50:42,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:50:42,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:50:42,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:50:42,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:50:42,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:50:42,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:50:42,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:50:42,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:50:42,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:50:42,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:50:42,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:50:42,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:50:42,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:50:42,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:50:42,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:50:42,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:50:42,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:50:42,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:50:42,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:50:42,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:50:42,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:50:42,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:50:42,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:50:42,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:50:42,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:50:42,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:50:42,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:50:42,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:50:42,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:50:42,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:50:42,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:50:42,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 15:50:42,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:50:42,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:50:42,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:50:42,619 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:50:42,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:50:42,619 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:50:42,619 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:50:42,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:50:42,619 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:50:42,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:50:42,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:50:42,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:50:42,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 15:50:42,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:50:42,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:50:42,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:50:42,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:50:42,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:50:42,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 15:50:42,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:50:42,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:50:42,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:50:42,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:50:42,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:50:42,623 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 15:50:42,623 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:42,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:50:42,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:50:42,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:50:42,624 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-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 310063ef643a90e947dd66ba142cc8ae546f077a [2020-12-09 15:50:42,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:50:42,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:50:42,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:50:42,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:50:42,880 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:50:42,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-12-09 15:50:42,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/22280a25a/f3cabeed4bee439e9acee65370ae4b8c/FLAG80caa5112 [2020-12-09 15:50:43,306 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:50:43,306 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-12-09 15:50:43,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/22280a25a/f3cabeed4bee439e9acee65370ae4b8c/FLAG80caa5112 [2020-12-09 15:50:43,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/data/22280a25a/f3cabeed4bee439e9acee65370ae4b8c [2020-12-09 15:50:43,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:50:43,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:50:43,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:50:43,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:50:43,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:50:43,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c6046b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43, skipping insertion in model container [2020-12-09 15:50:43,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:50:43,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:50:43,493 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2020-12-09 15:50:43,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:50:43,519 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:50:43,563 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2020-12-09 15:50:43,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:50:43,578 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:50:43,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43 WrapperNode [2020-12-09 15:50:43,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:50:43,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:50:43,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:50:43,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:50:43,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:50:43,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:50:43,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:50:43,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:50:43,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... [2020-12-09 15:50:43,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:50:43,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:50:43,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:50:43,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:50:43,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:50:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 15:50:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:50:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:50:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:50:43,803 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 15:50:44,128 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-09 15:50:44,128 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-09 15:50:44,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:50:44,138 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 15:50:44,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:50:44 BoogieIcfgContainer [2020-12-09 15:50:44,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:50:44,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:50:44,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:50:44,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:50:44,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:50:43" (1/3) ... [2020-12-09 15:50:44,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d83992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:50:44, skipping insertion in model container [2020-12-09 15:50:44,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:50:43" (2/3) ... [2020-12-09 15:50:44,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d83992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:50:44, skipping insertion in model container [2020-12-09 15:50:44,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:50:44" (3/3) ... [2020-12-09 15:50:44,147 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2020-12-09 15:50:44,160 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:50:44,164 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 15:50:44,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 15:50:44,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:50:44,197 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:50:44,197 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:50:44,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:50:44,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:50:44,198 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:50:44,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:50:44,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:50:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-12-09 15:50:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 15:50:44,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:44,219 INFO L422 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] [2020-12-09 15:50:44,219 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:44,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-12-09 15:50:44,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:44,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762956373] [2020-12-09 15:50:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:44,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:44,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:50:44,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:44,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762956373] [2020-12-09 15:50:44,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:44,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:44,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884095023] [2020-12-09 15:50:44,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:44,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:44,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:44,372 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2020-12-09 15:50:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:44,510 INFO L93 Difference]: Finished difference Result 246 states and 421 transitions. [2020-12-09 15:50:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:44,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-09 15:50:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:44,520 INFO L225 Difference]: With dead ends: 246 [2020-12-09 15:50:44,520 INFO L226 Difference]: Without dead ends: 112 [2020-12-09 15:50:44,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-09 15:50:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-12-09 15:50:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-09 15:50:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-12-09 15:50:44,552 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-12-09 15:50:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:44,552 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-12-09 15:50:44,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-12-09 15:50:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 15:50:44,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:44,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:44,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 15:50:44,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-12-09 15:50:44,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:44,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657439126] [2020-12-09 15:50:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:44,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:44,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:50:44,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:44,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657439126] [2020-12-09 15:50:44,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:44,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:44,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504554018] [2020-12-09 15:50:44,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:44,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:44,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:44,992 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-12-09 15:50:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:45,119 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-12-09 15:50:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:45,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-09 15:50:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:45,121 INFO L225 Difference]: With dead ends: 233 [2020-12-09 15:50:45,121 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 15:50:45,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 15:50:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-12-09 15:50:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 15:50:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-12-09 15:50:45,130 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-12-09 15:50:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:45,131 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-12-09 15:50:45,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-12-09 15:50:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-09 15:50:45,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:45,132 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:45,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 15:50:45,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:45,336 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-12-09 15:50:45,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:45,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543599680] [2020-12-09 15:50:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:45,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:45,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 15:50:45,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:45,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543599680] [2020-12-09 15:50:45,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:45,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:45,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819429299] [2020-12-09 15:50:45,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:45,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:45,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:45,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:45,588 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-12-09 15:50:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:45,711 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-12-09 15:50:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:45,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-09 15:50:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:45,714 INFO L225 Difference]: With dead ends: 265 [2020-12-09 15:50:45,714 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 15:50:45,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 15:50:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-12-09 15:50:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-09 15:50:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-12-09 15:50:45,724 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-12-09 15:50:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:45,724 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-12-09 15:50:45,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-12-09 15:50:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-09 15:50:45,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:45,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:45,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 15:50:45,928 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-12-09 15:50:45,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:45,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629593285] [2020-12-09 15:50:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:46,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:46,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 15:50:46,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:46,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629593285] [2020-12-09 15:50:46,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:46,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:46,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403842365] [2020-12-09 15:50:46,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:46,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:46,142 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 3 states. [2020-12-09 15:50:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:46,281 INFO L93 Difference]: Finished difference Result 321 states and 487 transitions. [2020-12-09 15:50:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:46,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-09 15:50:46,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:46,283 INFO L225 Difference]: With dead ends: 321 [2020-12-09 15:50:46,283 INFO L226 Difference]: Without dead ends: 187 [2020-12-09 15:50:46,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-09 15:50:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2020-12-09 15:50:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-09 15:50:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2020-12-09 15:50:46,292 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 67 [2020-12-09 15:50:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:46,292 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2020-12-09 15:50:46,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2020-12-09 15:50:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-09 15:50:46,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:46,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:46,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 15:50:46,496 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1434615126, now seen corresponding path program 1 times [2020-12-09 15:50:46,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:46,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633514843] [2020-12-09 15:50:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:46,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:46,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 15:50:46,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:46,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633514843] [2020-12-09 15:50:46,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:46,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:46,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165736519] [2020-12-09 15:50:46,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:46,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:46,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:46,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:46,655 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand 3 states. [2020-12-09 15:50:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:46,750 INFO L93 Difference]: Finished difference Result 381 states and 538 transitions. [2020-12-09 15:50:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:46,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-09 15:50:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:46,752 INFO L225 Difference]: With dead ends: 381 [2020-12-09 15:50:46,752 INFO L226 Difference]: Without dead ends: 207 [2020-12-09 15:50:46,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-12-09 15:50:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2020-12-09 15:50:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-09 15:50:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 280 transitions. [2020-12-09 15:50:46,759 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 280 transitions. Word has length 67 [2020-12-09 15:50:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:46,760 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 280 transitions. [2020-12-09 15:50:46,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 280 transitions. [2020-12-09 15:50:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 15:50:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:46,761 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:46,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 15:50:46,963 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:46,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1023824768, now seen corresponding path program 1 times [2020-12-09 15:50:46,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:46,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223112853] [2020-12-09 15:50:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:47,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:47,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 15:50:47,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:47,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223112853] [2020-12-09 15:50:47,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:47,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:47,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460105143] [2020-12-09 15:50:47,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:47,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:47,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:47,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:47,175 INFO L87 Difference]: Start difference. First operand 203 states and 280 transitions. Second operand 3 states. [2020-12-09 15:50:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:47,272 INFO L93 Difference]: Finished difference Result 420 states and 588 transitions. [2020-12-09 15:50:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:47,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-09 15:50:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:47,274 INFO L225 Difference]: With dead ends: 420 [2020-12-09 15:50:47,274 INFO L226 Difference]: Without dead ends: 227 [2020-12-09 15:50:47,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-09 15:50:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2020-12-09 15:50:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-09 15:50:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 306 transitions. [2020-12-09 15:50:47,280 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 306 transitions. Word has length 83 [2020-12-09 15:50:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:47,281 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 306 transitions. [2020-12-09 15:50:47,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 306 transitions. [2020-12-09 15:50:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 15:50:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:47,282 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:47,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 15:50:47,484 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-12-09 15:50:47,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:47,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434609400] [2020-12-09 15:50:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:47,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:47,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 15:50:47,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:47,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434609400] [2020-12-09 15:50:47,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:47,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:47,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887092560] [2020-12-09 15:50:47,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:47,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:47,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:47,700 INFO L87 Difference]: Start difference. First operand 224 states and 306 transitions. Second operand 3 states. [2020-12-09 15:50:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:47,727 INFO L93 Difference]: Finished difference Result 649 states and 888 transitions. [2020-12-09 15:50:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:47,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 15:50:47,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:47,730 INFO L225 Difference]: With dead ends: 649 [2020-12-09 15:50:47,730 INFO L226 Difference]: Without dead ends: 435 [2020-12-09 15:50:47,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-12-09 15:50:47,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2020-12-09 15:50:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-09 15:50:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 590 transitions. [2020-12-09 15:50:47,740 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 590 transitions. Word has length 103 [2020-12-09 15:50:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:47,740 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 590 transitions. [2020-12-09 15:50:47,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 590 transitions. [2020-12-09 15:50:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 15:50:47,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:47,741 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:47,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 15:50:47,943 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:47,944 INFO L82 PathProgramCache]: Analyzing trace with hash -713589126, now seen corresponding path program 1 times [2020-12-09 15:50:47,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:47,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387797906] [2020-12-09 15:50:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:48,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-09 15:50:48,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:48,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387797906] [2020-12-09 15:50:48,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:48,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:48,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673186056] [2020-12-09 15:50:48,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:48,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:48,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:48,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:48,120 INFO L87 Difference]: Start difference. First operand 435 states and 590 transitions. Second operand 3 states. [2020-12-09 15:50:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:48,146 INFO L93 Difference]: Finished difference Result 881 states and 1194 transitions. [2020-12-09 15:50:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:48,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 15:50:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:48,148 INFO L225 Difference]: With dead ends: 881 [2020-12-09 15:50:48,148 INFO L226 Difference]: Without dead ends: 456 [2020-12-09 15:50:48,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-12-09 15:50:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2020-12-09 15:50:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-12-09 15:50:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 617 transitions. [2020-12-09 15:50:48,158 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 617 transitions. Word has length 103 [2020-12-09 15:50:48,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:48,159 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 617 transitions. [2020-12-09 15:50:48,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 617 transitions. [2020-12-09 15:50:48,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 15:50:48,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:48,160 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:48,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 15:50:48,362 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:48,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1034569449, now seen corresponding path program 1 times [2020-12-09 15:50:48,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:48,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723593387] [2020-12-09 15:50:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:48,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-09 15:50:48,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:48,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723593387] [2020-12-09 15:50:48,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:48,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:48,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961905653] [2020-12-09 15:50:48,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:48,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:48,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:48,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:48,546 INFO L87 Difference]: Start difference. First operand 456 states and 617 transitions. Second operand 3 states. [2020-12-09 15:50:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:48,568 INFO L93 Difference]: Finished difference Result 928 states and 1254 transitions. [2020-12-09 15:50:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:48,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-09 15:50:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:48,572 INFO L225 Difference]: With dead ends: 928 [2020-12-09 15:50:48,572 INFO L226 Difference]: Without dead ends: 482 [2020-12-09 15:50:48,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-12-09 15:50:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2020-12-09 15:50:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-12-09 15:50:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 650 transitions. [2020-12-09 15:50:48,589 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 650 transitions. Word has length 104 [2020-12-09 15:50:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:48,590 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 650 transitions. [2020-12-09 15:50:48,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 650 transitions. [2020-12-09 15:50:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-09 15:50:48,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:48,591 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:48,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 15:50:48,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:48,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:48,792 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-12-09 15:50:48,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:48,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173244301] [2020-12-09 15:50:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:48,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:48,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-09 15:50:48,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:48,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173244301] [2020-12-09 15:50:48,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:48,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:48,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64931463] [2020-12-09 15:50:48,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:48,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:48,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:48,981 INFO L87 Difference]: Start difference. First operand 482 states and 650 transitions. Second operand 3 states. [2020-12-09 15:50:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:49,012 INFO L93 Difference]: Finished difference Result 1121 states and 1519 transitions. [2020-12-09 15:50:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:49,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-09 15:50:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:49,015 INFO L225 Difference]: With dead ends: 1121 [2020-12-09 15:50:49,015 INFO L226 Difference]: Without dead ends: 675 [2020-12-09 15:50:49,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:49,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-12-09 15:50:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2020-12-09 15:50:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-12-09 15:50:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 910 transitions. [2020-12-09 15:50:49,029 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 910 transitions. Word has length 105 [2020-12-09 15:50:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:49,029 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 910 transitions. [2020-12-09 15:50:49,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 910 transitions. [2020-12-09 15:50:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-09 15:50:49,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:49,030 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:49,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 15:50:49,231 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash -187333376, now seen corresponding path program 1 times [2020-12-09 15:50:49,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:49,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748742048] [2020-12-09 15:50:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:49,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:49,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 15:50:49,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:49,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748742048] [2020-12-09 15:50:49,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:49,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:49,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901275936] [2020-12-09 15:50:49,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:49,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:49,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:49,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:49,357 INFO L87 Difference]: Start difference. First operand 675 states and 910 transitions. Second operand 3 states. [2020-12-09 15:50:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:49,382 INFO L93 Difference]: Finished difference Result 1339 states and 1804 transitions. [2020-12-09 15:50:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:49,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-09 15:50:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:49,385 INFO L225 Difference]: With dead ends: 1339 [2020-12-09 15:50:49,385 INFO L226 Difference]: Without dead ends: 700 [2020-12-09 15:50:49,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-12-09 15:50:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2020-12-09 15:50:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-12-09 15:50:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 940 transitions. [2020-12-09 15:50:49,399 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 940 transitions. Word has length 105 [2020-12-09 15:50:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:49,399 INFO L481 AbstractCegarLoop]: Abstraction has 700 states and 940 transitions. [2020-12-09 15:50:49,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 940 transitions. [2020-12-09 15:50:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-09 15:50:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:49,401 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:49,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 15:50:49,601 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-12-09 15:50:49,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:49,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086798597] [2020-12-09 15:50:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:49,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-12-09 15:50:49,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:49,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086798597] [2020-12-09 15:50:49,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:49,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:49,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932278931] [2020-12-09 15:50:49,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:49,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:49,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:49,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:49,763 INFO L87 Difference]: Start difference. First operand 700 states and 940 transitions. Second operand 3 states. [2020-12-09 15:50:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:49,882 INFO L93 Difference]: Finished difference Result 1444 states and 1970 transitions. [2020-12-09 15:50:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:49,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-12-09 15:50:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:49,886 INFO L225 Difference]: With dead ends: 1444 [2020-12-09 15:50:49,886 INFO L226 Difference]: Without dead ends: 780 [2020-12-09 15:50:49,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-12-09 15:50:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 769. [2020-12-09 15:50:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-12-09 15:50:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1024 transitions. [2020-12-09 15:50:49,906 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1024 transitions. Word has length 173 [2020-12-09 15:50:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:49,906 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1024 transitions. [2020-12-09 15:50:49,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1024 transitions. [2020-12-09 15:50:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-09 15:50:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:49,908 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:50,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 15:50:50,109 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:50,110 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-12-09 15:50:50,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:50,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46441013] [2020-12-09 15:50:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:50:50,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 456 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:50,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 440 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:50,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46441013] [2020-12-09 15:50:50,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1118823461] [2020-12-09 15:50:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:50,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:50,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-12-09 15:50:50,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:50,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 15:50:50,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2020-12-09 15:50:50,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713827953] [2020-12-09 15:50:50,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:50,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:50,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:50,846 INFO L87 Difference]: Start difference. First operand 769 states and 1024 transitions. Second operand 3 states. [2020-12-09 15:50:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:50,872 INFO L93 Difference]: Finished difference Result 1734 states and 2312 transitions. [2020-12-09 15:50:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:50,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-12-09 15:50:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:50,878 INFO L225 Difference]: With dead ends: 1734 [2020-12-09 15:50:50,878 INFO L226 Difference]: Without dead ends: 1001 [2020-12-09 15:50:50,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-12-09 15:50:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2020-12-09 15:50:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-09 15:50:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1332 transitions. [2020-12-09 15:50:50,912 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1332 transitions. Word has length 194 [2020-12-09 15:50:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:50,913 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1332 transitions. [2020-12-09 15:50:50,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1332 transitions. [2020-12-09 15:50:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-09 15:50:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:50,917 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:51,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:51,317 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash -915330113, now seen corresponding path program 1 times [2020-12-09 15:50:51,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:51,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689931594] [2020-12-09 15:50:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:51,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:50:51,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 375 proven. 20 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-09 15:50:51,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 359 proven. 36 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-09 15:50:51,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689931594] [2020-12-09 15:50:51,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800961503] [2020-12-09 15:50:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:51,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-12-09 15:50:51,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:51,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 15:50:51,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2020-12-09 15:50:51,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970489239] [2020-12-09 15:50:51,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:51,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:51,908 INFO L87 Difference]: Start difference. First operand 1001 states and 1332 transitions. Second operand 3 states. [2020-12-09 15:50:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:51,935 INFO L93 Difference]: Finished difference Result 2498 states and 3353 transitions. [2020-12-09 15:50:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:51,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-12-09 15:50:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:51,942 INFO L225 Difference]: With dead ends: 2498 [2020-12-09 15:50:51,942 INFO L226 Difference]: Without dead ends: 1554 [2020-12-09 15:50:51,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-12-09 15:50:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1552. [2020-12-09 15:50:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-12-09 15:50:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2082 transitions. [2020-12-09 15:50:51,970 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2082 transitions. Word has length 196 [2020-12-09 15:50:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:51,970 INFO L481 AbstractCegarLoop]: Abstraction has 1552 states and 2082 transitions. [2020-12-09 15:50:51,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2082 transitions. [2020-12-09 15:50:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-09 15:50:51,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:51,973 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:52,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,17 cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:52,374 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:52,376 INFO L82 PathProgramCache]: Analyzing trace with hash 890108221, now seen corresponding path program 1 times [2020-12-09 15:50:52,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:52,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144154601] [2020-12-09 15:50:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:52,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:50:52,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 375 proven. 20 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-09 15:50:52,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 359 proven. 36 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-09 15:50:52,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144154601] [2020-12-09 15:50:52,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1442893654] [2020-12-09 15:50:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:52,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:52,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-12-09 15:50:52,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:52,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 15:50:52,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2020-12-09 15:50:52,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134925953] [2020-12-09 15:50:52,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:52,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:52,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:52,977 INFO L87 Difference]: Start difference. First operand 1552 states and 2082 transitions. Second operand 3 states. [2020-12-09 15:50:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:53,004 INFO L93 Difference]: Finished difference Result 2420 states and 3232 transitions. [2020-12-09 15:50:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:53,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-12-09 15:50:53,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:53,010 INFO L225 Difference]: With dead ends: 2420 [2020-12-09 15:50:53,010 INFO L226 Difference]: Without dead ends: 1556 [2020-12-09 15:50:53,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:50:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-12-09 15:50:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1554. [2020-12-09 15:50:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-12-09 15:50:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2075 transitions. [2020-12-09 15:50:53,039 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2075 transitions. Word has length 196 [2020-12-09 15:50:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:53,039 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2075 transitions. [2020-12-09 15:50:53,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2075 transitions. [2020-12-09 15:50:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-09 15:50:53,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:53,042 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:53,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3,19 cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:53,443 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2020-12-09 15:50:53,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:53,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313449386] [2020-12-09 15:50:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:53,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:50:53,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 458 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:53,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 442 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313449386] [2020-12-09 15:50:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703611317] [2020-12-09 15:50:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt [2020-12-09 15:50:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:53,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:50:53,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 458 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:54,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 442 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:54,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047765326] [2020-12-09 15:50:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:50:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:54,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:50:54,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 458 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:54,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:50:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 442 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-09 15:50:54,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 15:50:54,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2020-12-09 15:50:54,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290954551] [2020-12-09 15:50:54,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 15:50:54,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:54,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 15:50:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:50:54,427 INFO L87 Difference]: Start difference. First operand 1554 states and 2075 transitions. Second operand 8 states. [2020-12-09 15:50:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:54,919 INFO L93 Difference]: Finished difference Result 3716 states and 5078 transitions. [2020-12-09 15:50:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 15:50:54,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-12-09 15:50:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:54,927 INFO L225 Difference]: With dead ends: 3716 [2020-12-09 15:50:54,927 INFO L226 Difference]: Without dead ends: 2221 [2020-12-09 15:50:54,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-09 15:50:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2020-12-09 15:50:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2039. [2020-12-09 15:50:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2020-12-09 15:50:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2739 transitions. [2020-12-09 15:50:54,964 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2739 transitions. Word has length 196 [2020-12-09 15:50:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:54,965 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 2739 transitions. [2020-12-09 15:50:54,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 15:50:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2739 transitions. [2020-12-09 15:50:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-09 15:50:54,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:54,968 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:55,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3,21 cvc4 --incremental --print-success --lang smt,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:50:55,571 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash 228275513, now seen corresponding path program 1 times [2020-12-09 15:50:55,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:55,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405172007] [2020-12-09 15:50:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:55,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-12-09 15:50:55,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:55,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405172007] [2020-12-09 15:50:55,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:55,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:55,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746643485] [2020-12-09 15:50:55,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:55,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:55,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:55,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:55,798 INFO L87 Difference]: Start difference. First operand 2039 states and 2739 transitions. Second operand 3 states. [2020-12-09 15:50:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:55,913 INFO L93 Difference]: Finished difference Result 4259 states and 5817 transitions. [2020-12-09 15:50:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:55,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-09 15:50:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:55,922 INFO L225 Difference]: With dead ends: 4259 [2020-12-09 15:50:55,922 INFO L226 Difference]: Without dead ends: 2279 [2020-12-09 15:50:55,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-12-09 15:50:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2263. [2020-12-09 15:50:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-12-09 15:50:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3003 transitions. [2020-12-09 15:50:55,970 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3003 transitions. Word has length 221 [2020-12-09 15:50:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:55,970 INFO L481 AbstractCegarLoop]: Abstraction has 2263 states and 3003 transitions. [2020-12-09 15:50:55,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3003 transitions. [2020-12-09 15:50:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-09 15:50:55,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:55,974 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:56,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-12-09 15:50:56,175 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:56,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1390699401, now seen corresponding path program 1 times [2020-12-09 15:50:56,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:56,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618638377] [2020-12-09 15:50:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:56,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:56,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-12-09 15:50:56,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:56,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618638377] [2020-12-09 15:50:56,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:56,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:56,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452778314] [2020-12-09 15:50:56,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:56,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:56,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:56,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:56,476 INFO L87 Difference]: Start difference. First operand 2263 states and 3003 transitions. Second operand 3 states. [2020-12-09 15:50:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:56,592 INFO L93 Difference]: Finished difference Result 4739 states and 6417 transitions. [2020-12-09 15:50:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:56,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-09 15:50:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:56,601 INFO L225 Difference]: With dead ends: 4739 [2020-12-09 15:50:56,601 INFO L226 Difference]: Without dead ends: 2535 [2020-12-09 15:50:56,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2020-12-09 15:50:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2511. [2020-12-09 15:50:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-12-09 15:50:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3291 transitions. [2020-12-09 15:50:56,638 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3291 transitions. Word has length 221 [2020-12-09 15:50:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:56,638 INFO L481 AbstractCegarLoop]: Abstraction has 2511 states and 3291 transitions. [2020-12-09 15:50:56,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3291 transitions. [2020-12-09 15:50:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-12-09 15:50:56,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:56,641 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:56,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-12-09 15:50:56,842 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:56,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1838094167, now seen corresponding path program 1 times [2020-12-09 15:50:56,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:56,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292206069] [2020-12-09 15:50:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:57,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:57,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-12-09 15:50:57,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292206069] [2020-12-09 15:50:57,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:57,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:57,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073301252] [2020-12-09 15:50:57,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:57,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:57,152 INFO L87 Difference]: Start difference. First operand 2511 states and 3291 transitions. Second operand 3 states. [2020-12-09 15:50:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:57,288 INFO L93 Difference]: Finished difference Result 5267 states and 7049 transitions. [2020-12-09 15:50:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:57,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-12-09 15:50:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:57,298 INFO L225 Difference]: With dead ends: 5267 [2020-12-09 15:50:57,299 INFO L226 Difference]: Without dead ends: 2815 [2020-12-09 15:50:57,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:57,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2020-12-09 15:50:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2799. [2020-12-09 15:50:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-12-09 15:50:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3619 transitions. [2020-12-09 15:50:57,338 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3619 transitions. Word has length 251 [2020-12-09 15:50:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:57,338 INFO L481 AbstractCegarLoop]: Abstraction has 2799 states and 3619 transitions. [2020-12-09 15:50:57,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3619 transitions. [2020-12-09 15:50:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-12-09 15:50:57,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:57,341 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-12-09 15:50:57,542 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -837898215, now seen corresponding path program 1 times [2020-12-09 15:50:57,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:57,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007046381] [2020-12-09 15:50:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:57,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:57,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-12-09 15:50:57,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:57,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007046381] [2020-12-09 15:50:57,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:57,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:57,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805371186] [2020-12-09 15:50:57,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:57,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:57,801 INFO L87 Difference]: Start difference. First operand 2799 states and 3619 transitions. Second operand 3 states. [2020-12-09 15:50:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:57,849 INFO L93 Difference]: Finished difference Result 8039 states and 10423 transitions. [2020-12-09 15:50:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:57,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-12-09 15:50:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:57,867 INFO L225 Difference]: With dead ends: 8039 [2020-12-09 15:50:57,867 INFO L226 Difference]: Without dead ends: 5299 [2020-12-09 15:50:57,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2020-12-09 15:50:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 5297. [2020-12-09 15:50:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5297 states. [2020-12-09 15:50:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6864 transitions. [2020-12-09 15:50:57,957 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6864 transitions. Word has length 251 [2020-12-09 15:50:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:57,957 INFO L481 AbstractCegarLoop]: Abstraction has 5297 states and 6864 transitions. [2020-12-09 15:50:57,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6864 transitions. [2020-12-09 15:50:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-12-09 15:50:57,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:57,963 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:58,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-12-09 15:50:58,164 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:58,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash 83347439, now seen corresponding path program 1 times [2020-12-09 15:50:58,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:58,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805778883] [2020-12-09 15:50:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:58,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:58,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-12-09 15:50:58,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:58,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805778883] [2020-12-09 15:50:58,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:58,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:58,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608371891] [2020-12-09 15:50:58,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:58,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:58,491 INFO L87 Difference]: Start difference. First operand 5297 states and 6864 transitions. Second operand 3 states. [2020-12-09 15:50:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:58,624 INFO L93 Difference]: Finished difference Result 10831 states and 14171 transitions. [2020-12-09 15:50:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:58,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2020-12-09 15:50:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:58,643 INFO L225 Difference]: With dead ends: 10831 [2020-12-09 15:50:58,643 INFO L226 Difference]: Without dead ends: 5593 [2020-12-09 15:50:58,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2020-12-09 15:50:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 5561. [2020-12-09 15:50:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5561 states. [2020-12-09 15:50:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7168 transitions. [2020-12-09 15:50:58,720 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7168 transitions. Word has length 275 [2020-12-09 15:50:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:58,720 INFO L481 AbstractCegarLoop]: Abstraction has 5561 states and 7168 transitions. [2020-12-09 15:50:58,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7168 transitions. [2020-12-09 15:50:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-12-09 15:50:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:58,724 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:58,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2020-12-09 15:50:58,926 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash 652008344, now seen corresponding path program 1 times [2020-12-09 15:50:58,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:58,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713969469] [2020-12-09 15:50:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:59,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:59,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2020-12-09 15:50:59,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:59,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713969469] [2020-12-09 15:50:59,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:59,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:59,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29597071] [2020-12-09 15:50:59,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:59,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:59,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:59,218 INFO L87 Difference]: Start difference. First operand 5561 states and 7168 transitions. Second operand 3 states. [2020-12-09 15:50:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:50:59,365 INFO L93 Difference]: Finished difference Result 11687 states and 15395 transitions. [2020-12-09 15:50:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:50:59,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2020-12-09 15:50:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:50:59,374 INFO L225 Difference]: With dead ends: 11687 [2020-12-09 15:50:59,374 INFO L226 Difference]: Without dead ends: 6185 [2020-12-09 15:50:59,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2020-12-09 15:50:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6153. [2020-12-09 15:50:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6153 states. [2020-12-09 15:50:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 7840 transitions. [2020-12-09 15:50:59,445 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 7840 transitions. Word has length 286 [2020-12-09 15:50:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:50:59,445 INFO L481 AbstractCegarLoop]: Abstraction has 6153 states and 7840 transitions. [2020-12-09 15:50:59,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:50:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 7840 transitions. [2020-12-09 15:50:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-09 15:50:59,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:50:59,449 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:50:59,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2020-12-09 15:50:59,650 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:50:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:50:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash 709331495, now seen corresponding path program 1 times [2020-12-09 15:50:59,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:50:59,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867681495] [2020-12-09 15:50:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2020-12-09 15:50:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:50:59,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:50:59,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:50:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:50:59,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:50:59,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867681495] [2020-12-09 15:50:59,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:50:59,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:50:59,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372369355] [2020-12-09 15:50:59,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:50:59,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:50:59,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:50:59,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:50:59,961 INFO L87 Difference]: Start difference. First operand 6153 states and 7840 transitions. Second operand 3 states. [2020-12-09 15:51:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:51:00,116 INFO L93 Difference]: Finished difference Result 12913 states and 16829 transitions. [2020-12-09 15:51:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:51:00,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-09 15:51:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:51:00,124 INFO L225 Difference]: With dead ends: 12913 [2020-12-09 15:51:00,125 INFO L226 Difference]: Without dead ends: 6819 [2020-12-09 15:51:00,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:51:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6819 states. [2020-12-09 15:51:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6819 to 6803. [2020-12-09 15:51:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6803 states. [2020-12-09 15:51:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 8570 transitions. [2020-12-09 15:51:00,206 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 8570 transitions. Word has length 322 [2020-12-09 15:51:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:51:00,206 INFO L481 AbstractCegarLoop]: Abstraction has 6803 states and 8570 transitions. [2020-12-09 15:51:00,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:51:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 8570 transitions. [2020-12-09 15:51:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-12-09 15:51:00,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:51:00,211 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:51:00,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 mathsat -unsat_core_generation=3 [2020-12-09 15:51:00,412 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:51:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:51:00,414 INFO L82 PathProgramCache]: Analyzing trace with hash -321729676, now seen corresponding path program 1 times [2020-12-09 15:51:00,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:51:00,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554893306] [2020-12-09 15:51:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2020-12-09 15:51:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:00,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:51:00,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:51:00,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:51:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:51:00,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554893306] [2020-12-09 15:51:00,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2121544533] [2020-12-09 15:51:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/cvc4 Starting monitored process 31 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with cvc4 --incremental --print-success --lang smt [2020-12-09 15:51:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:01,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:51:01,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:51:01,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:51:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:51:01,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470059670] [2020-12-09 15:51:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:51:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:01,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:51:01,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:51:01,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:51:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-09 15:51:01,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 15:51:01,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-12-09 15:51:01,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892703771] [2020-12-09 15:51:01,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:51:01,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:51:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:51:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:51:01,987 INFO L87 Difference]: Start difference. First operand 6803 states and 8570 transitions. Second operand 6 states. [2020-12-09 15:51:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:51:02,505 INFO L93 Difference]: Finished difference Result 14736 states and 18565 transitions. [2020-12-09 15:51:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 15:51:02,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 359 [2020-12-09 15:51:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:51:02,514 INFO L225 Difference]: With dead ends: 14736 [2020-12-09 15:51:02,514 INFO L226 Difference]: Without dead ends: 7992 [2020-12-09 15:51:02,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2156 GetRequests, 2148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-09 15:51:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2020-12-09 15:51:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 6827. [2020-12-09 15:51:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6827 states. [2020-12-09 15:51:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 8470 transitions. [2020-12-09 15:51:02,603 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 8470 transitions. Word has length 359 [2020-12-09 15:51:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:51:02,603 INFO L481 AbstractCegarLoop]: Abstraction has 6827 states and 8470 transitions. [2020-12-09 15:51:02,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:51:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 8470 transitions. [2020-12-09 15:51:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-12-09 15:51:02,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:51:02,609 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:51:03,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 cvc4 --incremental --print-success --lang smt,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 mathsat -unsat_core_generation=3 [2020-12-09 15:51:03,211 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:51:03,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:51:03,212 INFO L82 PathProgramCache]: Analyzing trace with hash -37013969, now seen corresponding path program 1 times [2020-12-09 15:51:03,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:51:03,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484036615] [2020-12-09 15:51:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 33 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with mathsat -unsat_core_generation=3 [2020-12-09 15:51:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:03,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:51:03,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2020-12-09 15:51:03,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:51:03,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484036615] [2020-12-09 15:51:03,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:51:03,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:51:03,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902299307] [2020-12-09 15:51:03,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:51:03,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:51:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:51:03,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:51:03,630 INFO L87 Difference]: Start difference. First operand 6827 states and 8470 transitions. Second operand 3 states. [2020-12-09 15:51:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:51:03,776 INFO L93 Difference]: Finished difference Result 12611 states and 15897 transitions. [2020-12-09 15:51:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:51:03,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 398 [2020-12-09 15:51:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:51:03,782 INFO L225 Difference]: With dead ends: 12611 [2020-12-09 15:51:03,782 INFO L226 Difference]: Without dead ends: 4130 [2020-12-09 15:51:03,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:51:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-12-09 15:51:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4128. [2020-12-09 15:51:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4128 states. [2020-12-09 15:51:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 5120 transitions. [2020-12-09 15:51:03,845 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 5120 transitions. Word has length 398 [2020-12-09 15:51:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:51:03,845 INFO L481 AbstractCegarLoop]: Abstraction has 4128 states and 5120 transitions. [2020-12-09 15:51:03,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:51:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 5120 transitions. [2020-12-09 15:51:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-12-09 15:51:03,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:51:03,851 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 20, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 15:51:04,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 mathsat -unsat_core_generation=3 [2020-12-09 15:51:04,051 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:51:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:51:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1723660819, now seen corresponding path program 1 times [2020-12-09 15:51:04,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:51:04,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603971709] [2020-12-09 15:51:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2020-12-09 15:51:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:04,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:51:04,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2020-12-09 15:51:04,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:51:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2020-12-09 15:51:05,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603971709] [2020-12-09 15:51:05,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971175422] [2020-12-09 15:51:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/cvc4 Starting monitored process 35 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with cvc4 --incremental --print-success --lang smt [2020-12-09 15:51:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:51:05,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2020-12-09 15:51:05,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:51:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2020-12-09 15:51:05,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245877079] [2020-12-09 15:51:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:51:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:51:06,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:51:06,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:51:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2020-12-09 15:51:06,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:51:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2020-12-09 15:51:06,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 15:51:06,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-12-09 15:51:06,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503890204] [2020-12-09 15:51:06,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:51:06,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:51:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:51:06,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:51:06,933 INFO L87 Difference]: Start difference. First operand 4128 states and 5120 transitions. Second operand 6 states. [2020-12-09 15:51:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:51:07,152 INFO L93 Difference]: Finished difference Result 4341 states and 5390 transitions. [2020-12-09 15:51:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:51:07,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 619 [2020-12-09 15:51:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:51:07,152 INFO L225 Difference]: With dead ends: 4341 [2020-12-09 15:51:07,152 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:51:07,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3712 GetRequests, 3706 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:51:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:51:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:51:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:51:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:51:07,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 619 [2020-12-09 15:51:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:51:07,156 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:51:07,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:51:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:51:07,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:51:07,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 cvc4 --incremental --print-success --lang smt,34 mathsat -unsat_core_generation=3,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:51:07,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 15:51:08,883 WARN L197 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-12-09 15:51:09,080 INFO L258 CegarLoopResult]: At program point L135(lines 131 556) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse2 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse2))) [2020-12-09 15:51:09,081 INFO L258 CegarLoopResult]: At program point L532(lines 95 598) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)))) (let ((.cse9 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962864 32)) (_ bv0 32))) (.cse15 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962880 32)) (_ bv0 32))) (.cse5 (= (_ bv0 32) (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962816 32)))) (.cse17 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962848 32)) (_ bv0 32))) (.cse14 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962800 32)) (_ bv0 32))) (.cse12 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294967293 32)) (_ bv0 32))) (.cse13 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4294962928 32)) (_ bv0 32)))) (.cse19 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962832 32)) (_ bv0 32))) (.cse0 (not .cse3)) (.cse16 (= (_ bv0 32) (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962736 32)))) (.cse2 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962768 32)) (_ bv0 32))) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse10 (= (_ bv4560 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) (.cse11 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962944 32)) (_ bv0 32))) (.cse4 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse18 (= (_ bv0 32) (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962784 32)))) (.cse6 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse7 (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0)) (.cse8 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse3 .cse4 .cse1 .cse8 .cse9) (and .cse3 .cse4 .cse6 .cse7 .cse8 .cse10 .cse11) (and .cse3 .cse1 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32))) (and .cse0 .cse12 .cse4 .cse13 .cse7 .cse8) (and .cse3 .cse4 .cse1 .cse8 .cse14) (and .cse3 .cse4 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse7 .cse15) (and .cse3 .cse4 .cse6 .cse7 .cse8 .cse9) (and .cse0 (= (_ bv0 32) (bvadd ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4294967293 32))) .cse1 .cse11) (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))) (and .cse3 .cse4 .cse6 .cse7 .cse8 .cse16 .cse10) (and .cse3 .cse4 .cse17 .cse1 .cse8) (and .cse3 .cse4 .cse1 .cse15) (and .cse4 .cse1 .cse8 .cse16 .cse10) (and .cse3 .cse4 .cse5 .cse1 .cse8) (and .cse3 .cse4 .cse17 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse18) (and .cse4 .cse1 .cse18 .cse8) (and .cse12 .cse4 .cse6 .cse7 .cse8 .cse10) (and .cse12 .cse4 .cse1 .cse8 .cse10) (and .cse4 .cse1 .cse2 .cse8) (and .cse3 .cse4 .cse6 .cse19 .cse7 .cse8) (and .cse3 .cse4 .cse6 .cse7 .cse8 .cse14) (and .cse0 .cse12 .cse1 .cse13) (and .cse3 .cse4 .cse1 .cse19 .cse8) (and .cse0 .cse1 .cse16) (and .cse3 .cse4 .cse6 .cse7 .cse2 .cse8) (and .cse3 .cse4 .cse1 .cse8 .cse10 .cse11) (and .cse3 .cse4 .cse18 .cse6 .cse7 .cse8) (and (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962912 32)) (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))))) [2020-12-09 15:51:09,081 INFO L265 CegarLoopResult]: At program point L599(lines 94 600) the Hoare annotation is: true [2020-12-09 15:51:09,081 INFO L262 CegarLoopResult]: For program point L170(lines 170 543) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L137(lines 137 554) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L104(lines 104 565) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L369(lines 369 373) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L369-2(lines 369 373) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L303-1(lines 303 317) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L258 CegarLoopResult]: At program point L204(lines 101 566) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32)))) [2020-12-09 15:51:09,082 INFO L258 CegarLoopResult]: At program point L171(lines 167 544) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3))) [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L568(lines 568 596) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L569(lines 569 593) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L503-1(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L338(lines 338 343) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L173(lines 173 542) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L140(lines 140 553) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L107(lines 107 564) no Hoare annotation was computed. [2020-12-09 15:51:09,082 INFO L262 CegarLoopResult]: For program point L603(lines 603 607) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L570(lines 570 579) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L603-2(lines 603 607) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L570-2(lines 569 591) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L258 CegarLoopResult]: At program point L141(lines 137 554) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3))) [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L75(lines 75 83) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L307(lines 307 311) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L307-2(lines 305 317) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L572(lines 572 576) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L440(lines 440 445) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L275(lines 275 279) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L209(lines 209 213) no Hoare annotation was computed. [2020-12-09 15:51:09,083 INFO L262 CegarLoopResult]: For program point L176(lines 176 541) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L143(lines 143 552) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L209-2(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L110(lines 110 563) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L474(lines 474 478) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L258 CegarLoopResult]: At program point L177(lines 173 542) the Hoare annotation is: (let ((.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse3 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse4 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse3 .cse4) (and (not .cse0) .cse2 .cse4 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32)))))) [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L78(lines 78 82) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L78-2(lines 75 83) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L508-1(lines 508 512) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L409(lines 409 413) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L245(lines 245 250) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L179(lines 179 540) no Hoare annotation was computed. [2020-12-09 15:51:09,084 INFO L262 CegarLoopResult]: For program point L146(lines 146 551) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L113(lines 113 562) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L258 CegarLoopResult]: At program point L147(lines 143 552) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3))) [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L479(lines 479 483) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L479-2(lines 479 483) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L182(lines 182 539) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L149(lines 149 550) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L116(lines 116 561) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L381(lines 381 385) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L348(lines 348 352) no Hoare annotation was computed. [2020-12-09 15:51:09,085 INFO L258 CegarLoopResult]: At program point L183(lines 179 540) the Hoare annotation is: (let ((.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse3 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse4 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse3 .cse4) (and (not .cse0) .cse2 .cse4 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32)))))) [2020-12-09 15:51:09,085 INFO L258 CegarLoopResult]: At program point L117(lines 113 562) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32)))) [2020-12-09 15:51:09,085 INFO L258 CegarLoopResult]: At program point L349(lines 67 616) the Hoare annotation is: false [2020-12-09 15:51:09,085 INFO L262 CegarLoopResult]: For program point L85(lines 85 93) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L265 CegarLoopResult]: At program point L614(lines 67 616) the Hoare annotation is: true [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L581(lines 581 587) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L515(lines 515 519) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L515-2(lines 515 519) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L284(lines 284 288) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L284-2(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L185(lines 185 538) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L152(lines 152 549) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L119(lines 119 560) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L86(lines 86 90) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L265 CegarLoopResult]: At program point L615(lines 10 617) the Hoare annotation is: true [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L450(lines 450 454) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L353(lines 353 357) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L221(lines 221 238) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L188(lines 188 537) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L155(lines 155 548) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L221-2(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L262 CegarLoopResult]: For program point L122(lines 122 559) no Hoare annotation was computed. [2020-12-09 15:51:09,086 INFO L258 CegarLoopResult]: At program point L189(lines 185 538) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse6 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32)))) (.cse4 (= (_ bv4560 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (or (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3 .cse4) (and (let ((.cse5 (not .cse0))) (or (and .cse5 .cse6 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4294962928 32)) (_ bv0 32))) .cse3) (and .cse5 .cse6 (= (_ bv0 32) (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962736 32)))))) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32)))) (and .cse0 .cse1 .cse6 .cse2 .cse3 .cse4))) [2020-12-09 15:51:09,087 INFO L258 CegarLoopResult]: At program point L123(lines 119 560) the Hoare annotation is: (and (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962896 32)) (_ bv0 32)))) [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L487-1(lines 487 499) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L421(lines 421 425) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L223(lines 223 228) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L191(lines 191 536) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L158(lines 158 547) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L125(lines 125 558) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L522(lines 522 526) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L258 CegarLoopResult]: At program point L192(lines 191 536) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (= (_ bv4560 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) (.cse4 (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962944 32)) (_ bv0 32)))) (or (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3 .cse4) (and (not .cse0) (= (_ bv0 32) (bvadd ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4294967293 32))) .cse5 .cse4) (and .cse0 .cse1 .cse5 .cse2 .cse3 .cse4))) [2020-12-09 15:51:09,087 INFO L258 CegarLoopResult]: At program point L159(lines 149 550) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3))) [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L490(lines 490 495) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L457(lines 457 468) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L457-1(lines 457 468) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L325(lines 325 329) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L325-2(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 15:51:09,087 INFO L262 CegarLoopResult]: For program point L392(lines 392 396) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L194(lines 194 535) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L161(lines 161 546) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L128(lines 128 557) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L95-1(lines 67 616) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L459(lines 459 465) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L294(lines 294 298) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L294-2(lines 294 298) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L265 CegarLoopResult]: At program point L195(lines 194 535) the Hoare annotation is: true [2020-12-09 15:51:09,088 INFO L258 CegarLoopResult]: At program point L129(lines 125 558) the Hoare annotation is: (and (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32)))) [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L262(lines 262 266) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L229(lines 229 234) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L262-2(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L265 CegarLoopResult]: At program point L626(lines 618 628) the Hoare annotation is: true [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L164(lines 164 545) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L131(lines 131 556) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L98(lines 98 567) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 610) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L429(lines 429 433) no Hoare annotation was computed. [2020-12-09 15:51:09,088 INFO L262 CegarLoopResult]: For program point L429-2(lines 199 531) no Hoare annotation was computed. [2020-12-09 15:51:09,089 INFO L265 CegarLoopResult]: At program point L198(lines 197 534) the Hoare annotation is: true [2020-12-09 15:51:09,089 INFO L258 CegarLoopResult]: At program point L165(lines 161 546) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse2 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse3 (not (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294962928 32)) (_ bv0 32))))) (or (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse2 .cse3) (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv256 32) ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0) .cse2 .cse3))) [2020-12-09 15:51:09,089 INFO L258 CegarLoopResult]: At program point L99(lines 98 567) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (bvadd ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4294955004 32)) (_ bv0 32))) [2020-12-09 15:51:09,089 INFO L262 CegarLoopResult]: For program point L364(lines 364 368) no Hoare annotation was computed. [2020-12-09 15:51:09,089 INFO L262 CegarLoopResult]: For program point L398(lines 398 403) no Hoare annotation was computed. [2020-12-09 15:51:09,089 INFO L262 CegarLoopResult]: For program point L398-2(lines 398 403) no Hoare annotation was computed. [2020-12-09 15:51:09,089 INFO L262 CegarLoopResult]: For program point L167(lines 167 544) no Hoare annotation was computed. [2020-12-09 15:51:09,089 INFO L262 CegarLoopResult]: For program point L134(lines 134 555) no Hoare annotation was computed. [2020-12-09 15:51:09,089 INFO L262 CegarLoopResult]: For program point L101(lines 101 566) no Hoare annotation was computed. [2020-12-09 15:51:09,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:51:09 BoogieIcfgContainer [2020-12-09 15:51:09,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:51:09,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:51:09,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:51:09,115 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:51:09,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:50:44" (3/4) ... [2020-12-09 15:51:09,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:51:09,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 15:51:09,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 15:51:09,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:51:09,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:51:09,191 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7eb3d13-bd11-4b8a-8f18-a9140c1355b2/bin/utaipan/witness.graphml [2020-12-09 15:51:09,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:51:09,192 INFO L168 Benchmark]: Toolchain (without parser) took 25864.76 ms. Allocated memory was 60.8 MB in the beginning and 597.7 MB in the end (delta: 536.9 MB). Free memory was 41.6 MB in the beginning and 273.7 MB in the end (delta: -232.1 MB). Peak memory consumption was 303.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,193 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:51:09,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.48 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 41.3 MB in the end (delta: 159.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 38.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,193 INFO L168 Benchmark]: Boogie Preprocessor took 34.11 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,194 INFO L168 Benchmark]: RCFGBuilder took 486.03 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 36.7 MB in the beginning and 46.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,194 INFO L168 Benchmark]: TraceAbstraction took 24973.54 ms. Allocated memory was 77.6 MB in the beginning and 597.7 MB in the end (delta: 520.1 MB). Free memory was 46.2 MB in the beginning and 283.2 MB in the end (delta: -237.0 MB). Peak memory consumption was 411.3 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,194 INFO L168 Benchmark]: Witness Printer took 76.06 ms. Allocated memory is still 597.7 MB. Free memory was 283.2 MB in the beginning and 273.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 15:51:09,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.48 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 41.3 MB in the end (delta: 159.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 38.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.11 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 486.03 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 36.7 MB in the beginning and 46.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24973.54 ms. Allocated memory was 77.6 MB in the beginning and 597.7 MB in the end (delta: 520.1 MB). Free memory was 46.2 MB in the beginning and 283.2 MB in the end (delta: -237.0 MB). Peak memory consumption was 411.3 MB. Max. memory is 16.1 GB. * Witness Printer took 76.06 ms. Allocated memory is still 597.7 MB. Free memory was 283.2 MB in the beginning and 273.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 610]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (1bv32 == blastFlag && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) && !(~bvadd64(s__state, 4294962896bv32) == 0bv32) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32))) || (((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) && !(~bvadd64(s__state, 4294962896bv32) == 0bv32)) - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 3bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: (((((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) && 4560bv32 == s__s3__tmp__next_state___0) || (((((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(~bvadd64(s__s3__tmp__next_state___0, 4294962928bv32) == 0bv32)) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || ((!(s__hit == 0bv32) && 2bv32 == blastFlag) && 0bv32 == ~bvadd64(s__state, 4294962736bv32))) && !(~bvadd64(s__state, 4294962896bv32) == 0bv32))) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) && 4560bv32 == s__s3__tmp__next_state___0) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((!(s__hit == 0bv32) && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962768bv32) == 0bv32) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 0bv32 == ~bvadd64(s__state, 4294962816bv32)) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X)) || ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && ~bvadd64(s__state, 4294962864bv32) == 0bv32)) || ((((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && 4560bv32 == s__s3__tmp__next_state___0) && ~bvadd64(s__state, 4294962944bv32) == 0bv32)) || ((s__hit == 0bv32 && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962896bv32) == 0bv32)) || (((((!(s__hit == 0bv32) && ~bvadd64(s__state, 4294967293bv32) == 0bv32) && 61087bv32 == ag_Y) && !(~bvadd64(s__s3__tmp__next_state___0, 4294962928bv32) == 0bv32)) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X)) || ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && ~bvadd64(s__state, 4294962800bv32) == 0bv32)) || ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 3bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && ~bvadd64(s__state, 4294962880bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && ~bvadd64(s__state, 4294962864bv32) == 0bv32)) || (((!(s__hit == 0bv32) && 0bv32 == ~bvadd64(s__s3__tmp__next_state___0, 4294967293bv32)) && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962944bv32) == 0bv32)) || (0bv32 == blastFlag && ~bvadd64(s__state, 4294962928bv32) == 0bv32)) || ((((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && 0bv32 == ~bvadd64(s__state, 4294962736bv32)) && 4560bv32 == s__s3__tmp__next_state___0)) || ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && ~bvadd64(s__state, 4294962848bv32) == 0bv32) && 2bv32 == blastFlag) && 65535bv32 == ag_X)) || (((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962880bv32) == 0bv32)) || ((((61087bv32 == ag_Y && 2bv32 == blastFlag) && 65535bv32 == ag_X) && 0bv32 == ~bvadd64(s__state, 4294962736bv32)) && 4560bv32 == s__s3__tmp__next_state___0)) || ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 0bv32 == ~bvadd64(s__state, 4294962816bv32)) && 2bv32 == blastFlag) && 65535bv32 == ag_X)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && ~bvadd64(s__state, 4294962848bv32) == 0bv32) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X)) || ((!(s__hit == 0bv32) && 2bv32 == blastFlag) && 0bv32 == ~bvadd64(s__state, 4294962784bv32))) || (((61087bv32 == ag_Y && 2bv32 == blastFlag) && 0bv32 == ~bvadd64(s__state, 4294962784bv32)) && 65535bv32 == ag_X)) || (((((~bvadd64(s__state, 4294967293bv32) == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && 4560bv32 == s__s3__tmp__next_state___0)) || ((((~bvadd64(s__state, 4294967293bv32) == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && 4560bv32 == s__s3__tmp__next_state___0)) || (((61087bv32 == ag_Y && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962768bv32) == 0bv32) && 65535bv32 == ag_X)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && ~bvadd64(s__state, 4294962832bv32) == 0bv32) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && ~bvadd64(s__state, 4294962800bv32) == 0bv32)) || (((!(s__hit == 0bv32) && ~bvadd64(s__state, 4294967293bv32) == 0bv32) && 2bv32 == blastFlag) && !(~bvadd64(s__s3__tmp__next_state___0, 4294962928bv32) == 0bv32))) || ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962832bv32) == 0bv32) && 65535bv32 == ag_X)) || ((!(s__hit == 0bv32) && 2bv32 == blastFlag) && 0bv32 == ~bvadd64(s__state, 4294962736bv32))) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && ~bvadd64(s__state, 4294962768bv32) == 0bv32) && 65535bv32 == ag_X)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && 4560bv32 == s__s3__tmp__next_state___0) && ~bvadd64(s__state, 4294962944bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 0bv32 == ~bvadd64(s__state, 4294962784bv32)) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X)) || (~bvadd64(s__state, 4294962912bv32) == 0bv32 && 1bv32 == blastFlag) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 0bv32 == blastFlag && !(~bvadd64(s__state, 4294962896bv32) == 0bv32) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: (((((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && 4560bv32 == s__s3__tmp__next_state___0) && ~bvadd64(s__state, 4294962944bv32) == 0bv32) || (((!(s__hit == 0bv32) && 0bv32 == ~bvadd64(s__s3__tmp__next_state___0, 4294967293bv32)) && 2bv32 == blastFlag) && ~bvadd64(s__state, 4294962944bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && 4560bv32 == s__s3__tmp__next_state___0) && ~bvadd64(s__state, 4294962944bv32) == 0bv32) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (s__hit == 0bv32 && 2bv32 == blastFlag) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (0bv32 == blastFlag && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) && !(~bvadd64(s__state, 4294962896bv32) == 0bv32) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32))) || (((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) && !(~bvadd64(s__state, 4294962896bv32) == 0bv32)) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: ((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 2bv32 == blastFlag) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) || (((((s__hit == 0bv32 && 61087bv32 == ag_Y) && 4bv32 == blastFlag) && 256bv32 == s__s3__tmp__new_cipher__algorithms) && 65535bv32 == ag_X) && !(~bvadd64(s__state, 4294962928bv32) == 0bv32)) - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: 0bv32 == blastFlag && ~bvadd64(s__state, 4294955004bv32) == 0bv32 - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.5s, OverallIterations: 26, TraceHistogramMax: 22, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5257 SDtfs, 1983 SDslu, 3784 SDs, 0 SdLazy, 3182 SolverSat, 444 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12018 GetRequests, 11954 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6827occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 26 MinimizatonAttempts, 1520 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 23 PreInvPairs, 120 NumberOfFragments, 1152 HoareAnnotationTreeSize, 23 FomulaSimplifications, 3906 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 23 FomulaSimplificationsInter, 431 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 7939 NumberOfCodeBlocks, 7939 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 12000 ConstructedInterpolants, 0 QuantifiedInterpolants, 6326892 SizeOfPredicates, 18 NumberOfNonLiveVariables, 10854 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 47 InterpolantComputations, 23 PerfectInterpolantSequences, 52115/52595 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...