./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh --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 ffdd9c6c8ed32275119d4b9d2dc66b9f80986fea1a039186a702d6c803e62485 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:09:03,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:09:03,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:09:03,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:09:03,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:09:03,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:09:03,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:09:03,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:09:03,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:09:03,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:09:03,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:09:03,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:09:03,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:09:03,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:09:03,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:09:03,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:09:03,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:09:03,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:09:03,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:09:03,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:09:03,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:09:03,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:09:03,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:09:03,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:09:03,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:09:03,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:09:03,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:09:03,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:09:03,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:09:03,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:09:03,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:09:03,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:09:03,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:09:03,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:09:03,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:09:03,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:09:03,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:09:03,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:09:03,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:09:03,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:09:03,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:09:03,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:09:03,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:09:03,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:09:03,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:09:03,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:09:03,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:09:03,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:09:03,557 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:09:03,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:09:03,558 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:09:03,558 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:09:03,558 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:09:03,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:09:03,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:09:03,559 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:09:03,559 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:09:03,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:09:03,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:09:03,559 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:09:03,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:09:03,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:09:03,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:09:03,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:09:03,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:09:03,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:09:03,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:09:03,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:09:03,561 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:09:03,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:09:03,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:09:03,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:09:03,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:09:03,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:09:03,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:09:03,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:09:03,563 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:09:03,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:09:03,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:09:03,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:09:03,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:09:03,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:09:03,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:09:03,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffdd9c6c8ed32275119d4b9d2dc66b9f80986fea1a039186a702d6c803e62485 [2022-12-14 09:09:03,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:09:03,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:09:03,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:09:03,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:09:03,776 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:09:03,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2022-12-14 09:09:06,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:09:06,547 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:09:06,547 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2022-12-14 09:09:06,554 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/data/fa97fdd6d/0169284c30e741a08093d33a80d133d1/FLAG1f4278f1d [2022-12-14 09:09:06,565 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/data/fa97fdd6d/0169284c30e741a08093d33a80d133d1 [2022-12-14 09:09:06,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:09:06,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:09:06,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:09:06,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:09:06,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:09:06,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb56761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06, skipping insertion in model container [2022-12-14 09:09:06,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:09:06,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:09:06,745 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2022-12-14 09:09:06,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:09:06,758 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:09:06,794 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2022-12-14 09:09:06,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:09:06,806 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:09:06,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06 WrapperNode [2022-12-14 09:09:06,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:09:06,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:09:06,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:09:06,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:09:06,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,839 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 529 [2022-12-14 09:09:06,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:09:06,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:09:06,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:09:06,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:09:06,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,859 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:09:06,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:09:06,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:09:06,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:09:06,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (1/1) ... [2022-12-14 09:09:06,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:09:06,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:06,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:09:06,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:09:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:09:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:09:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:09:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:09:06,994 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:09:06,995 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:09:07,006 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 09:09:07,403 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-12-14 09:09:07,403 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-12-14 09:09:07,403 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:09:07,506 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:09:07,507 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:09:07,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:07 BoogieIcfgContainer [2022-12-14 09:09:07,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:09:07,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:09:07,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:09:07,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:09:07,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:09:06" (1/3) ... [2022-12-14 09:09:07,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14479f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:09:07, skipping insertion in model container [2022-12-14 09:09:07,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:06" (2/3) ... [2022-12-14 09:09:07,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14479f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:09:07, skipping insertion in model container [2022-12-14 09:09:07,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:07" (3/3) ... [2022-12-14 09:09:07,517 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a_alt.BV.c.cil.c [2022-12-14 09:09:07,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:09:07,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:09:07,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:09:07,584 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@402fb247, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:09:07,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:09:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 09:09:07,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:07,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:07,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1391795705, now seen corresponding path program 1 times [2022-12-14 09:09:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:07,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538528643] [2022-12-14 09:09:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:07,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538528643] [2022-12-14 09:09:07,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538528643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:07,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:07,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:09:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347822476] [2022-12-14 09:09:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:07,953 INFO L87 Difference]: Start difference. First operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:08,153 INFO L93 Difference]: Finished difference Result 248 states and 436 transitions. [2022-12-14 09:09:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:08,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-12-14 09:09:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:08,165 INFO L225 Difference]: With dead ends: 248 [2022-12-14 09:09:08,166 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 09:09:08,168 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:08,171 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 109 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:08,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 102 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:09:08,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 09:09:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2022-12-14 09:09:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5757575757575757) internal successors, (208), 132 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 208 transitions. [2022-12-14 09:09:08,208 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 208 transitions. Word has length 39 [2022-12-14 09:09:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:08,208 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 208 transitions. [2022-12-14 09:09:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 208 transitions. [2022-12-14 09:09:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 09:09:08,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:08,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:09:08,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash -203029433, now seen corresponding path program 1 times [2022-12-14 09:09:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:08,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23473324] [2022-12-14 09:09:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:08,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:08,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23473324] [2022-12-14 09:09:08,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23473324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:08,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:08,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:09:08,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196155269] [2022-12-14 09:09:08,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:08,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:08,317 INFO L87 Difference]: Start difference. First operand 133 states and 208 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:08,468 INFO L93 Difference]: Finished difference Result 310 states and 491 transitions. [2022-12-14 09:09:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:08,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-12-14 09:09:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:08,470 INFO L225 Difference]: With dead ends: 310 [2022-12-14 09:09:08,470 INFO L226 Difference]: Without dead ends: 177 [2022-12-14 09:09:08,471 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:08,472 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 81 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:08,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 78 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-14 09:09:08,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2022-12-14 09:09:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6140350877192982) internal successors, (276), 171 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 276 transitions. [2022-12-14 09:09:08,487 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 276 transitions. Word has length 40 [2022-12-14 09:09:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:08,487 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 276 transitions. [2022-12-14 09:09:08,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 276 transitions. [2022-12-14 09:09:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 09:09:08,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:08,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:08,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:09:08,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:08,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1653679508, now seen corresponding path program 1 times [2022-12-14 09:09:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:08,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024555245] [2022-12-14 09:09:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:08,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:08,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024555245] [2022-12-14 09:09:08,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024555245] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:09:08,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259915878] [2022-12-14 09:09:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:08,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:08,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:08,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:09:08,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:09:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:08,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:09:08,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:09:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:08,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:09:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 09:09:08,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259915878] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:09:08,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:09:08,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2022-12-14 09:09:08,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681244057] [2022-12-14 09:09:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:08,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:08,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:09:08,848 INFO L87 Difference]: Start difference. First operand 172 states and 276 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:08,898 INFO L93 Difference]: Finished difference Result 341 states and 549 transitions. [2022-12-14 09:09:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:08,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 09:09:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:08,901 INFO L225 Difference]: With dead ends: 341 [2022-12-14 09:09:08,901 INFO L226 Difference]: Without dead ends: 339 [2022-12-14 09:09:08,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:09:08,903 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 91 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:08,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 248 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:09:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-12-14 09:09:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2022-12-14 09:09:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.6201780415430267) internal successors, (546), 337 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 546 transitions. [2022-12-14 09:09:08,927 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 546 transitions. Word has length 53 [2022-12-14 09:09:08,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:08,928 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 546 transitions. [2022-12-14 09:09:08,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 546 transitions. [2022-12-14 09:09:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 09:09:08,931 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:08,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:08,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:09:09,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:09,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1561475182, now seen corresponding path program 1 times [2022-12-14 09:09:09,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784830463] [2022-12-14 09:09:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 09:09:09,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:09,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784830463] [2022-12-14 09:09:09,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784830463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:09,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:09,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:09:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934626657] [2022-12-14 09:09:09,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:09,318 INFO L87 Difference]: Start difference. First operand 338 states and 546 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:09,429 INFO L93 Difference]: Finished difference Result 548 states and 880 transitions. [2022-12-14 09:09:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-14 09:09:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:09,432 INFO L225 Difference]: With dead ends: 548 [2022-12-14 09:09:09,432 INFO L226 Difference]: Without dead ends: 378 [2022-12-14 09:09:09,434 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:09,435 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 103 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:09,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 74 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-14 09:09:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-12-14 09:09:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.6) internal successors, (600), 375 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 600 transitions. [2022-12-14 09:09:09,447 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 600 transitions. Word has length 70 [2022-12-14 09:09:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:09,447 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 600 transitions. [2022-12-14 09:09:09,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 600 transitions. [2022-12-14 09:09:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 09:09:09,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:09,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:09,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:09:09,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1177470157, now seen corresponding path program 1 times [2022-12-14 09:09:09,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:09,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854786203] [2022-12-14 09:09:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:09,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 09:09:09,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854786203] [2022-12-14 09:09:09,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854786203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:09,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:09,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:09:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040511463] [2022-12-14 09:09:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:09,513 INFO L87 Difference]: Start difference. First operand 376 states and 600 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:09,622 INFO L93 Difference]: Finished difference Result 567 states and 903 transitions. [2022-12-14 09:09:09,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:09,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 09:09:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:09,625 INFO L225 Difference]: With dead ends: 567 [2022-12-14 09:09:09,625 INFO L226 Difference]: Without dead ends: 378 [2022-12-14 09:09:09,626 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:09,627 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:09,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 74 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-14 09:09:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-12-14 09:09:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.5893333333333333) internal successors, (596), 375 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 596 transitions. [2022-12-14 09:09:09,638 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 596 transitions. Word has length 71 [2022-12-14 09:09:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:09,638 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 596 transitions. [2022-12-14 09:09:09,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 596 transitions. [2022-12-14 09:09:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 09:09:09,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:09,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:09:09,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash -552336755, now seen corresponding path program 2 times [2022-12-14 09:09:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:09,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802478171] [2022-12-14 09:09:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:09,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802478171] [2022-12-14 09:09:09,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802478171] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:09:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105968535] [2022-12-14 09:09:09,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:09:09,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:09,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:09,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:09:09,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:09:09,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 09:09:09,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:09:09,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:09:09,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:09:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 09:09:09,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:09:09,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105968535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:09,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:09:09,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 09:09:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813186919] [2022-12-14 09:09:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:09,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:09:09,899 INFO L87 Difference]: Start difference. First operand 376 states and 596 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:10,029 INFO L93 Difference]: Finished difference Result 616 states and 975 transitions. [2022-12-14 09:09:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-12-14 09:09:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:10,031 INFO L225 Difference]: With dead ends: 616 [2022-12-14 09:09:10,031 INFO L226 Difference]: Without dead ends: 426 [2022-12-14 09:09:10,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:09:10,033 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 34 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:10,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 184 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-14 09:09:10,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 414. [2022-12-14 09:09:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.5447941888619854) internal successors, (638), 413 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 638 transitions. [2022-12-14 09:09:10,050 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 638 transitions. Word has length 84 [2022-12-14 09:09:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:10,050 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 638 transitions. [2022-12-14 09:09:10,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 638 transitions. [2022-12-14 09:09:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 09:09:10,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:10,052 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:10,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:09:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 09:09:10,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1401498194, now seen corresponding path program 1 times [2022-12-14 09:09:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:10,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992458254] [2022-12-14 09:09:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 09:09:10,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:10,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992458254] [2022-12-14 09:09:10,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992458254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:10,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:10,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:09:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265539806] [2022-12-14 09:09:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:10,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:10,319 INFO L87 Difference]: Start difference. First operand 414 states and 638 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:10,448 INFO L93 Difference]: Finished difference Result 946 states and 1486 transitions. [2022-12-14 09:09:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:10,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-12-14 09:09:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:10,450 INFO L225 Difference]: With dead ends: 946 [2022-12-14 09:09:10,451 INFO L226 Difference]: Without dead ends: 534 [2022-12-14 09:09:10,451 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:10,452 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:10,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 150 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-14 09:09:10,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 492. [2022-12-14 09:09:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.494908350305499) internal successors, (734), 491 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 734 transitions. [2022-12-14 09:09:10,477 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 734 transitions. Word has length 103 [2022-12-14 09:09:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:10,477 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 734 transitions. [2022-12-14 09:09:10,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 734 transitions. [2022-12-14 09:09:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 09:09:10,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:10,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:10,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:09:10,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -91609082, now seen corresponding path program 1 times [2022-12-14 09:09:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:10,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314173813] [2022-12-14 09:09:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:10,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:10,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314173813] [2022-12-14 09:09:10,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314173813] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:09:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747164055] [2022-12-14 09:09:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:10,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:09:10,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:09:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:10,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 09:09:10,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:09:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:10,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:09:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 09:09:11,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747164055] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:09:11,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249765804] [2022-12-14 09:09:11,052 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-12-14 09:09:11,052 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:09:11,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:09:11,061 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:09:11,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:09:15,194 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:09:35,763 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8277#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:09:35,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:09:35,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:09:35,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 7 [2022-12-14 09:09:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762699239] [2022-12-14 09:09:35,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:09:35,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:09:35,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:09:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=2195, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 09:09:35,766 INFO L87 Difference]: Start difference. First operand 492 states and 734 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:35,936 INFO L93 Difference]: Finished difference Result 1829 states and 2750 transitions. [2022-12-14 09:09:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:09:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-12-14 09:09:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:35,942 INFO L225 Difference]: With dead ends: 1829 [2022-12-14 09:09:35,943 INFO L226 Difference]: Without dead ends: 1827 [2022-12-14 09:09:35,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 269 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=561, Invalid=2195, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 09:09:35,944 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1081 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:35,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 1826 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2022-12-14 09:09:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1177. [2022-12-14 09:09:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.4923469387755102) internal successors, (1755), 1176 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1755 transitions. [2022-12-14 09:09:35,976 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1755 transitions. Word has length 108 [2022-12-14 09:09:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:35,976 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1755 transitions. [2022-12-14 09:09:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1755 transitions. [2022-12-14 09:09:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-14 09:09:35,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:35,978 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:35,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:09:36,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:36,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash 651497161, now seen corresponding path program 1 times [2022-12-14 09:09:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:36,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235386682] [2022-12-14 09:09:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-14 09:09:36,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:36,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235386682] [2022-12-14 09:09:36,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235386682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:36,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:36,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:09:36,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117003709] [2022-12-14 09:09:36,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:36,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:36,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:36,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:36,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:36,268 INFO L87 Difference]: Start difference. First operand 1177 states and 1755 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:36,404 INFO L93 Difference]: Finished difference Result 2385 states and 3571 transitions. [2022-12-14 09:09:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:36,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-12-14 09:09:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:36,408 INFO L225 Difference]: With dead ends: 2385 [2022-12-14 09:09:36,408 INFO L226 Difference]: Without dead ends: 1210 [2022-12-14 09:09:36,410 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:36,410 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 23 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:36,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 179 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-12-14 09:09:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1207. [2022-12-14 09:09:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.4519071310116087) internal successors, (1751), 1206 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1751 transitions. [2022-12-14 09:09:36,456 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1751 transitions. Word has length 202 [2022-12-14 09:09:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:36,457 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1751 transitions. [2022-12-14 09:09:36,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1751 transitions. [2022-12-14 09:09:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-14 09:09:36,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:36,461 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:36,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:09:36,461 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:36,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1868948956, now seen corresponding path program 1 times [2022-12-14 09:09:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:36,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714085833] [2022-12-14 09:09:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-12-14 09:09:36,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714085833] [2022-12-14 09:09:36,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714085833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:36,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:36,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:09:36,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847679719] [2022-12-14 09:09:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:36,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:09:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:36,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:09:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:09:36,521 INFO L87 Difference]: Start difference. First operand 1207 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:36,654 INFO L93 Difference]: Finished difference Result 2605 states and 3827 transitions. [2022-12-14 09:09:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:09:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-12-14 09:09:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:36,657 INFO L225 Difference]: With dead ends: 2605 [2022-12-14 09:09:36,657 INFO L226 Difference]: Without dead ends: 1352 [2022-12-14 09:09:36,659 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:36,659 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 32 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:36,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 173 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:09:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-12-14 09:09:36,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2022-12-14 09:09:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.4145077720207253) internal successors, (1911), 1351 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1911 transitions. [2022-12-14 09:09:36,689 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1911 transitions. Word has length 216 [2022-12-14 09:09:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:36,689 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1911 transitions. [2022-12-14 09:09:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1911 transitions. [2022-12-14 09:09:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-12-14 09:09:36,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:36,692 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:36,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 09:09:36,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash -355291685, now seen corresponding path program 1 times [2022-12-14 09:09:36,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:36,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145132329] [2022-12-14 09:09:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 393 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-14 09:09:36,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:36,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145132329] [2022-12-14 09:09:36,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145132329] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:09:36,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854809573] [2022-12-14 09:09:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:36,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:36,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:36,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:09:36,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:09:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:36,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 09:09:36,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:09:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 376 proven. 112 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-14 09:09:37,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:09:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 406 proven. 15 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-12-14 09:09:37,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854809573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:09:37,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1681290251] [2022-12-14 09:09:37,185 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-12-14 09:09:37,185 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:09:37,185 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:09:37,185 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:09:37,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:09:43,237 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:10:05,008 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21943#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:10:05,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:10:05,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:10:05,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-12-14 09:10:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614973888] [2022-12-14 09:10:05,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:10:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:10:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:10:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:10:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=2523, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 09:10:05,011 INFO L87 Difference]: Start difference. First operand 1352 states and 1911 transitions. Second operand has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:10:06,484 INFO L93 Difference]: Finished difference Result 5963 states and 8303 transitions. [2022-12-14 09:10:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 09:10:06,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2022-12-14 09:10:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:10:06,493 INFO L225 Difference]: With dead ends: 5963 [2022-12-14 09:10:06,493 INFO L226 Difference]: Without dead ends: 4613 [2022-12-14 09:10:06,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 629 SyntacticMatches, 22 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3084 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=876, Invalid=4674, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 09:10:06,496 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 871 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:10:06,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1446 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 09:10:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2022-12-14 09:10:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 3788. [2022-12-14 09:10:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 1.3797200950620543) internal successors, (5225), 3787 states have internal predecessors, (5225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5225 transitions. [2022-12-14 09:10:06,599 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5225 transitions. Word has length 229 [2022-12-14 09:10:06,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:10:06,599 INFO L495 AbstractCegarLoop]: Abstraction has 3788 states and 5225 transitions. [2022-12-14 09:10:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5225 transitions. [2022-12-14 09:10:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-12-14 09:10:06,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:10:06,605 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:10:06,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:10:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:10:06,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:10:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:10:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1019688187, now seen corresponding path program 1 times [2022-12-14 09:10:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:10:06,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715469483] [2022-12-14 09:10:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:06,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:10:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-12-14 09:10:06,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:10:06,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715469483] [2022-12-14 09:10:06,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715469483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:10:06,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:10:06,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:10:06,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417942943] [2022-12-14 09:10:06,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:10:06,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:10:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:10:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:10:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:10:06,857 INFO L87 Difference]: Start difference. First operand 3788 states and 5225 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:10:07,015 INFO L93 Difference]: Finished difference Result 8036 states and 11050 transitions. [2022-12-14 09:10:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:10:07,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-12-14 09:10:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:10:07,023 INFO L225 Difference]: With dead ends: 8036 [2022-12-14 09:10:07,023 INFO L226 Difference]: Without dead ends: 4250 [2022-12-14 09:10:07,026 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:10:07,027 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 21 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:10:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 184 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:10:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2022-12-14 09:10:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4110. [2022-12-14 09:10:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 4109 states have (on average 1.3601849598442444) internal successors, (5589), 4109 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 5589 transitions. [2022-12-14 09:10:07,137 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 5589 transitions. Word has length 249 [2022-12-14 09:10:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:10:07,137 INFO L495 AbstractCegarLoop]: Abstraction has 4110 states and 5589 transitions. [2022-12-14 09:10:07,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 5589 transitions. [2022-12-14 09:10:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-12-14 09:10:07,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:10:07,143 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:10:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 09:10:07,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:10:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:10:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1089952143, now seen corresponding path program 1 times [2022-12-14 09:10:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:10:07,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076387465] [2022-12-14 09:10:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:10:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-12-14 09:10:07,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:10:07,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076387465] [2022-12-14 09:10:07,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076387465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:10:07,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:10:07,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:10:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49606336] [2022-12-14 09:10:07,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:10:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:10:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:10:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:10:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:10:07,197 INFO L87 Difference]: Start difference. First operand 4110 states and 5589 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:10:07,362 INFO L93 Difference]: Finished difference Result 8654 states and 11766 transitions. [2022-12-14 09:10:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:10:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-12-14 09:10:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:10:07,370 INFO L225 Difference]: With dead ends: 8654 [2022-12-14 09:10:07,370 INFO L226 Difference]: Without dead ends: 4546 [2022-12-14 09:10:07,373 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:10:07,373 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:10:07,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 184 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:10:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2022-12-14 09:10:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4460. [2022-12-14 09:10:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4459 states have (on average 1.3413321372505047) internal successors, (5981), 4459 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 5981 transitions. [2022-12-14 09:10:07,488 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 5981 transitions. Word has length 273 [2022-12-14 09:10:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:10:07,488 INFO L495 AbstractCegarLoop]: Abstraction has 4460 states and 5981 transitions. [2022-12-14 09:10:07,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 5981 transitions. [2022-12-14 09:10:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-12-14 09:10:07,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:10:07,494 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:10:07,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 09:10:07,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:10:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:10:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash 222261636, now seen corresponding path program 1 times [2022-12-14 09:10:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:10:07,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924715975] [2022-12-14 09:10:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:10:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 606 proven. 48 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-12-14 09:10:07,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:10:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924715975] [2022-12-14 09:10:07,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924715975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:10:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232214505] [2022-12-14 09:10:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:07,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:10:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:10:07,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:10:07,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:10:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:07,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:10:07,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:10:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 555 proven. 99 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-12-14 09:10:07,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:10:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 606 proven. 48 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-12-14 09:10:08,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232214505] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:10:08,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80050846] [2022-12-14 09:10:08,053 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-12-14 09:10:08,053 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:10:08,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:10:08,054 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:10:08,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:10:16,870 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:10:43,433 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64167#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:10:43,433 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:10:43,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:10:43,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-14 09:10:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340742217] [2022-12-14 09:10:43,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:10:43,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:10:43,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:10:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:10:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=2524, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 09:10:43,435 INFO L87 Difference]: Start difference. First operand 4460 states and 5981 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:10:43,903 INFO L93 Difference]: Finished difference Result 7639 states and 10193 transitions. [2022-12-14 09:10:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:10:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2022-12-14 09:10:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:10:43,911 INFO L225 Difference]: With dead ends: 7639 [2022-12-14 09:10:43,911 INFO L226 Difference]: Without dead ends: 2603 [2022-12-14 09:10:43,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 762 SyntacticMatches, 19 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=686, Invalid=2854, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 09:10:43,915 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 96 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:10:43,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 732 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:10:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2022-12-14 09:10:43,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2562. [2022-12-14 09:10:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 1.350253807106599) internal successors, (3458), 2561 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3458 transitions. [2022-12-14 09:10:43,969 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3458 transitions. Word has length 277 [2022-12-14 09:10:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:10:43,969 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 3458 transitions. [2022-12-14 09:10:43,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3458 transitions. [2022-12-14 09:10:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-12-14 09:10:43,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:10:43,973 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-14 09:10:43,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 09:10:44,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 09:10:44,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:10:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:10:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash 811336053, now seen corresponding path program 1 times [2022-12-14 09:10:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:10:44,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163548227] [2022-12-14 09:10:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:10:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-12-14 09:10:44,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:10:44,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163548227] [2022-12-14 09:10:44,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163548227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:10:44,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:10:44,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:10:44,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963420358] [2022-12-14 09:10:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:10:44,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:10:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:10:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:10:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:10:44,241 INFO L87 Difference]: Start difference. First operand 2562 states and 3458 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:10:44,363 INFO L93 Difference]: Finished difference Result 5157 states and 6921 transitions. [2022-12-14 09:10:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:10:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2022-12-14 09:10:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:10:44,367 INFO L225 Difference]: With dead ends: 5157 [2022-12-14 09:10:44,367 INFO L226 Difference]: Without dead ends: 2597 [2022-12-14 09:10:44,369 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:10:44,369 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:10:44,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:10:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2022-12-14 09:10:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2262. [2022-12-14 09:10:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2261 states have (on average 1.3361344537815125) internal successors, (3021), 2261 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3021 transitions. [2022-12-14 09:10:44,414 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3021 transitions. Word has length 295 [2022-12-14 09:10:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:10:44,414 INFO L495 AbstractCegarLoop]: Abstraction has 2262 states and 3021 transitions. [2022-12-14 09:10:44,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3021 transitions. [2022-12-14 09:10:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-12-14 09:10:44,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:10:44,416 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:10:44,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 09:10:44,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:10:44,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:10:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1998344417, now seen corresponding path program 1 times [2022-12-14 09:10:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:10:44,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071085806] [2022-12-14 09:10:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:10:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-12-14 09:10:44,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:10:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071085806] [2022-12-14 09:10:44,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071085806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:10:44,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:10:44,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:10:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977536958] [2022-12-14 09:10:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:10:44,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:10:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:10:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:10:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:10:44,479 INFO L87 Difference]: Start difference. First operand 2262 states and 3021 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:10:44,628 INFO L93 Difference]: Finished difference Result 6086 states and 8042 transitions. [2022-12-14 09:10:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:10:44,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2022-12-14 09:10:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:10:44,635 INFO L225 Difference]: With dead ends: 6086 [2022-12-14 09:10:44,635 INFO L226 Difference]: Without dead ends: 4169 [2022-12-14 09:10:44,637 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:10:44,638 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 100 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:10:44,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 361 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:10:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2022-12-14 09:10:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 4104. [2022-12-14 09:10:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 4103 states have (on average 1.327565196197904) internal successors, (5447), 4103 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5447 transitions. [2022-12-14 09:10:44,743 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5447 transitions. Word has length 326 [2022-12-14 09:10:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:10:44,744 INFO L495 AbstractCegarLoop]: Abstraction has 4104 states and 5447 transitions. [2022-12-14 09:10:44,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:10:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5447 transitions. [2022-12-14 09:10:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-12-14 09:10:44,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:10:44,748 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:10:44,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 09:10:44,748 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:10:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:10:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1552095638, now seen corresponding path program 1 times [2022-12-14 09:10:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:10:44,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232387106] [2022-12-14 09:10:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:10:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 828 proven. 25 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-12-14 09:10:44,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:10:44,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232387106] [2022-12-14 09:10:44,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232387106] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:10:44,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148407712] [2022-12-14 09:10:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:10:44,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:10:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:10:44,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:10:44,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 09:10:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:10:44,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:10:44,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:10:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 524 proven. 253 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-12-14 09:10:45,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:10:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 642 proven. 135 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-12-14 09:10:45,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148407712] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:10:45,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67521650] [2022-12-14 09:10:45,456 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-12-14 09:10:45,456 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:10:45,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:10:45,456 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:10:45,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:11:18,341 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:11:47,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '98305#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:11:47,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:11:47,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:11:47,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2022-12-14 09:11:47,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178558917] [2022-12-14 09:11:47,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:11:47,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:11:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:11:47,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:11:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=3848, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 09:11:47,033 INFO L87 Difference]: Start difference. First operand 4104 states and 5447 transitions. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:11:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:11:48,165 INFO L93 Difference]: Finished difference Result 12528 states and 16814 transitions. [2022-12-14 09:11:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 09:11:48,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2022-12-14 09:11:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:11:48,174 INFO L225 Difference]: With dead ends: 12528 [2022-12-14 09:11:48,174 INFO L226 Difference]: Without dead ends: 8100 [2022-12-14 09:11:48,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 915 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2892 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=938, Invalid=5382, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 09:11:48,178 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 428 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:11:48,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1045 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:11:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2022-12-14 09:11:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6575. [2022-12-14 09:11:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.329936111956191) internal successors, (8743), 6574 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:11:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 8743 transitions. [2022-12-14 09:11:48,376 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 8743 transitions. Word has length 327 [2022-12-14 09:11:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:11:48,376 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 8743 transitions. [2022-12-14 09:11:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:11:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 8743 transitions. [2022-12-14 09:11:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-12-14 09:11:48,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:11:48,385 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 09:11:48,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 09:11:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 09:11:48,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:11:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:11:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash -17046760, now seen corresponding path program 2 times [2022-12-14 09:11:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:11:48,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983376962] [2022-12-14 09:11:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:11:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:11:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:11:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 1272 proven. 12 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2022-12-14 09:11:48,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:11:48,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983376962] [2022-12-14 09:11:48,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983376962] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:11:48,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849345106] [2022-12-14 09:11:48,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:11:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:11:48,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:11:48,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:11:48,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:11:48,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 09:11:48,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:11:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:11:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:11:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 767 proven. 12 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2022-12-14 09:11:48,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:11:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 767 proven. 12 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2022-12-14 09:11:48,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849345106] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:11:48,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [467236498] [2022-12-14 09:11:48,897 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-12-14 09:11:48,897 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:11:48,897 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:11:48,898 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:11:48,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:12:20,383 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:12:50,302 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '122944#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:12:50,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:12:50,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:12:50,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-12-14 09:12:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824097445] [2022-12-14 09:12:50,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:12:50,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:12:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:12:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=3593, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 09:12:50,304 INFO L87 Difference]: Start difference. First operand 6575 states and 8743 transitions. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:51,196 INFO L93 Difference]: Finished difference Result 22868 states and 30399 transitions. [2022-12-14 09:12:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:12:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2022-12-14 09:12:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:51,215 INFO L225 Difference]: With dead ends: 22868 [2022-12-14 09:12:51,215 INFO L226 Difference]: Without dead ends: 16295 [2022-12-14 09:12:51,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1166 SyntacticMatches, 17 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=854, Invalid=4116, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 09:12:51,221 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 354 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:51,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 754 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:12:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16295 states. [2022-12-14 09:12:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16295 to 11674. [2022-12-14 09:12:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11674 states, 11673 states have (on average 1.3197978240383792) internal successors, (15406), 11673 states have internal predecessors, (15406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11674 states to 11674 states and 15406 transitions. [2022-12-14 09:12:51,549 INFO L78 Accepts]: Start accepts. Automaton has 11674 states and 15406 transitions. Word has length 414 [2022-12-14 09:12:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:51,550 INFO L495 AbstractCegarLoop]: Abstraction has 11674 states and 15406 transitions. [2022-12-14 09:12:51,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 11674 states and 15406 transitions. [2022-12-14 09:12:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-12-14 09:12:51,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:51,560 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:51,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:12:51,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 09:12:51,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:12:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -353624267, now seen corresponding path program 1 times [2022-12-14 09:12:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:51,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228074812] [2022-12-14 09:12:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 1583 proven. 0 refuted. 0 times theorem prover too weak. 1189 trivial. 0 not checked. [2022-12-14 09:12:51,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228074812] [2022-12-14 09:12:51,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228074812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:51,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:51,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:12:51,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760195768] [2022-12-14 09:12:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:51,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:12:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:12:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:51,836 INFO L87 Difference]: Start difference. First operand 11674 states and 15406 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:52,269 INFO L93 Difference]: Finished difference Result 24751 states and 32453 transitions. [2022-12-14 09:12:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:12:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2022-12-14 09:12:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:52,284 INFO L225 Difference]: With dead ends: 24751 [2022-12-14 09:12:52,284 INFO L226 Difference]: Without dead ends: 13102 [2022-12-14 09:12:52,292 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:12:52,292 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:52,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13102 states. [2022-12-14 09:12:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13102 to 13018. [2022-12-14 09:12:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13018 states, 13017 states have (on average 1.2964584773757395) internal successors, (16876), 13017 states have internal predecessors, (16876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13018 states to 13018 states and 16876 transitions. [2022-12-14 09:12:52,660 INFO L78 Accepts]: Start accepts. Automaton has 13018 states and 16876 transitions. Word has length 460 [2022-12-14 09:12:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:52,660 INFO L495 AbstractCegarLoop]: Abstraction has 13018 states and 16876 transitions. [2022-12-14 09:12:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 13018 states and 16876 transitions. [2022-12-14 09:12:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-12-14 09:12:52,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:52,673 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 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, 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] [2022-12-14 09:12:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 09:12:52,673 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:12:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -20734408, now seen corresponding path program 1 times [2022-12-14 09:12:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:52,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21426827] [2022-12-14 09:12:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 1598 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-12-14 09:12:52,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:52,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21426827] [2022-12-14 09:12:52,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21426827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:52,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:52,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:12:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75312800] [2022-12-14 09:12:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:12:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:12:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:52,770 INFO L87 Difference]: Start difference. First operand 13018 states and 16876 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:53,187 INFO L93 Difference]: Finished difference Result 25742 states and 33220 transitions. [2022-12-14 09:12:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:12:53,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2022-12-14 09:12:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:53,199 INFO L225 Difference]: With dead ends: 25742 [2022-12-14 09:12:53,199 INFO L226 Difference]: Without dead ends: 12749 [2022-12-14 09:12:53,205 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:12:53,206 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:53,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 185 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12749 states. [2022-12-14 09:12:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12749 to 12457. [2022-12-14 09:12:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12457 states, 12456 states have (on average 1.275208734746307) internal successors, (15884), 12456 states have internal predecessors, (15884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12457 states to 12457 states and 15884 transitions. [2022-12-14 09:12:53,541 INFO L78 Accepts]: Start accepts. Automaton has 12457 states and 15884 transitions. Word has length 474 [2022-12-14 09:12:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:53,542 INFO L495 AbstractCegarLoop]: Abstraction has 12457 states and 15884 transitions. [2022-12-14 09:12:53,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12457 states and 15884 transitions. [2022-12-14 09:12:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-12-14 09:12:53,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:53,552 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 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, 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] [2022-12-14 09:12:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 09:12:53,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:12:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:53,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2091078006, now seen corresponding path program 1 times [2022-12-14 09:12:53,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:53,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566193524] [2022-12-14 09:12:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1644 proven. 193 refuted. 0 times theorem prover too weak. 1203 trivial. 0 not checked. [2022-12-14 09:12:53,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:53,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566193524] [2022-12-14 09:12:53,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566193524] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:12:53,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094536782] [2022-12-14 09:12:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:12:53,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:12:53,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:12:53,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 09:12:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:53,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:12:53,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:12:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1693 proven. 226 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2022-12-14 09:12:54,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:12:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1782 proven. 137 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2022-12-14 09:12:55,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094536782] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:12:55,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1227223313] [2022-12-14 09:12:55,240 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 09:12:55,240 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:12:55,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:12:55,241 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:12:55,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:14:06,988 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:14:37,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '253023#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:14:37,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:14:37,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:14:37,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 09:14:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749549896] [2022-12-14 09:14:37,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:14:37,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:14:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:14:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:14:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1064, Invalid=4192, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 09:14:37,914 INFO L87 Difference]: Start difference. First operand 12457 states and 15884 transitions. Second operand has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:14:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:14:40,874 INFO L93 Difference]: Finished difference Result 48839 states and 62938 transitions. [2022-12-14 09:14:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 09:14:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2022-12-14 09:14:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:14:40,905 INFO L225 Difference]: With dead ends: 48839 [2022-12-14 09:14:40,905 INFO L226 Difference]: Without dead ends: 36022 [2022-12-14 09:14:40,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1459 GetRequests, 1332 SyntacticMatches, 41 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6021 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=1245, Invalid=6411, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 09:14:40,916 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1088 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:14:40,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1126 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 09:14:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36022 states. [2022-12-14 09:14:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36022 to 34546. [2022-12-14 09:14:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34546 states, 34545 states have (on average 1.2610508033000434) internal successors, (43563), 34545 states have internal predecessors, (43563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:14:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34546 states to 34546 states and 43563 transitions. [2022-12-14 09:14:42,312 INFO L78 Accepts]: Start accepts. Automaton has 34546 states and 43563 transitions. Word has length 476 [2022-12-14 09:14:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:14:42,312 INFO L495 AbstractCegarLoop]: Abstraction has 34546 states and 43563 transitions. [2022-12-14 09:14:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:14:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 34546 states and 43563 transitions. [2022-12-14 09:14:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-12-14 09:14:42,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:14:42,340 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 18, 18, 16, 14, 14, 12, 12, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:14:42,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 09:14:42,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 09:14:42,542 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:14:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:14:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1130148384, now seen corresponding path program 1 times [2022-12-14 09:14:42,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:14:42,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727964901] [2022-12-14 09:14:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:14:42,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:14:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:14:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2178 proven. 360 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-12-14 09:14:42,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:14:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727964901] [2022-12-14 09:14:42,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727964901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:14:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771397016] [2022-12-14 09:14:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:14:42,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:14:42,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:14:42,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:14:42,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 09:14:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:14:42,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:14:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:14:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2178 proven. 360 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-12-14 09:14:43,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:14:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2341 proven. 197 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-12-14 09:14:44,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771397016] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:14:44,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894169733] [2022-12-14 09:14:44,555 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 09:14:44,555 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:14:44,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:14:44,555 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:14:44,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:15:43,230 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:16:13,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352335#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:16:13,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:16:13,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:16:13,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 09:16:13,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220248679] [2022-12-14 09:16:13,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:16:13,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:16:13,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:16:13,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:16:13,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=4177, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 09:16:13,600 INFO L87 Difference]: Start difference. First operand 34546 states and 43563 transitions. Second operand has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:16:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:16:17,507 INFO L93 Difference]: Finished difference Result 73857 states and 92926 transitions. [2022-12-14 09:16:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 09:16:17,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2022-12-14 09:16:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:16:17,546 INFO L225 Difference]: With dead ends: 73857 [2022-12-14 09:16:17,546 INFO L226 Difference]: Without dead ends: 43295 [2022-12-14 09:16:17,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1524 SyntacticMatches, 46 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6976 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=1274, Invalid=6382, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 09:16:17,566 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 670 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:16:17,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 959 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 09:16:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43295 states. [2022-12-14 09:16:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43295 to 40812. [2022-12-14 09:16:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40812 states, 40811 states have (on average 1.2566219891695867) internal successors, (51284), 40811 states have internal predecessors, (51284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:16:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40812 states to 40812 states and 51284 transitions. [2022-12-14 09:16:19,664 INFO L78 Accepts]: Start accepts. Automaton has 40812 states and 51284 transitions. Word has length 543 [2022-12-14 09:16:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:16:19,664 INFO L495 AbstractCegarLoop]: Abstraction has 40812 states and 51284 transitions. [2022-12-14 09:16:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:16:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 40812 states and 51284 transitions. [2022-12-14 09:16:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-12-14 09:16:19,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:16:19,695 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 19, 19, 17, 15, 15, 13, 13, 11, 11, 11, 11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:16:19,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 09:16:19,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:16:19,896 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:16:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:16:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash 566113662, now seen corresponding path program 2 times [2022-12-14 09:16:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:16:19,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86047403] [2022-12-14 09:16:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:16:19,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:16:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:16:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 1921 proven. 74 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2022-12-14 09:16:20,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:16:20,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86047403] [2022-12-14 09:16:20,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86047403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:16:20,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835997822] [2022-12-14 09:16:20,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:16:20,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:16:20,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:16:20,200 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:16:20,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 09:16:20,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-14 09:16:20,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:16:20,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:16:20,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:16:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2552 proven. 49 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-12-14 09:16:20,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:16:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2552 proven. 49 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-12-14 09:16:20,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835997822] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:16:20,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529070076] [2022-12-14 09:16:20,614 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 09:16:20,614 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:16:20,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:16:20,615 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:16:20,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:17:19,145 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:17:50,027 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '487876#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-12-14 09:17:50,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:17:50,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:17:50,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 09:17:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572204131] [2022-12-14 09:17:50,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:17:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:17:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:17:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:17:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1059, Invalid=4197, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 09:17:50,029 INFO L87 Difference]: Start difference. First operand 40812 states and 51284 transitions. Second operand has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:17:53,573 INFO L93 Difference]: Finished difference Result 84187 states and 105529 transitions. [2022-12-14 09:17:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 09:17:53,574 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2022-12-14 09:17:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:17:53,574 INFO L225 Difference]: With dead ends: 84187 [2022-12-14 09:17:53,574 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:17:53,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1644 SyntacticMatches, 49 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7310 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=1246, Invalid=6586, Unknown=0, NotChecked=0, Total=7832 [2022-12-14 09:17:53,603 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 748 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 09:17:53,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1122 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 09:17:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:17:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:17:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:17:53,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 581 [2022-12-14 09:17:53,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:17:53,604 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:17:53,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:17:53,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:17:53,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:17:53,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 09:17:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c6f2a8-fa8a-43e0-89e4-d4724e48df5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 09:17:53,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:19:40,856 WARN L233 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 1573 DAG size of output: 1464 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 09:19:50,116 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 256 DAG size of output: 257 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 09:21:43,505 WARN L233 SmtUtils]: Spent 1.67m on a formula simplification. DAG size of input: 1572 DAG size of output: 1464 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)