./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V --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 21774f07edc6bb728cb664e1a2361d7b986cd58290bb234c442a42ac18f35f10 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:14:44,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:14:44,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:14:44,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:14:44,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:14:44,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:14:44,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:14:44,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:14:44,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:14:44,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:14:44,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:14:44,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:14:44,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:14:44,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:14:44,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:14:44,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:14:44,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:14:44,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:14:44,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:14:44,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:14:44,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:14:44,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:14:44,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:14:44,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:14:44,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:14:44,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:14:44,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:14:44,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:14:44,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:14:44,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:14:44,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:14:44,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:14:44,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:14:44,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:14:44,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:14:44,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:14:44,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:14:44,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:14:44,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:14:44,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:14:44,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:14:44,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:14:44,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:14:44,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:14:44,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:14:44,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:14:44,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:14:44,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:14:44,572 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:14:44,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:14:44,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:14:44,572 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:14:44,573 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:14:44,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:14:44,574 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:14:44,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:14:44,574 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:14:44,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:14:44,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:14:44,575 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:14:44,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:14:44,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:14:44,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:14:44,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:14:44,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:14:44,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:14:44,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:14:44,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:14:44,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:14:44,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:14:44,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:14:44,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:14:44,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:14:44,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:14:44,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:44,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:14:44,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:14:44,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:14:44,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:14:44,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:14:44,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:14:44,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:14:44,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:14:44,584 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21774f07edc6bb728cb664e1a2361d7b986cd58290bb234c442a42ac18f35f10 [2021-11-23 02:14:44,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:14:44,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:14:44,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:14:44,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:14:44,883 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:14:44,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c [2021-11-23 02:14:44,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/data/fde1613e6/0d8dedd594544a98b1a6339d8388d4c5/FLAG0aa491e14 [2021-11-23 02:14:45,526 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:14:45,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c [2021-11-23 02:14:45,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/data/fde1613e6/0d8dedd594544a98b1a6339d8388d4c5/FLAG0aa491e14 [2021-11-23 02:14:45,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/data/fde1613e6/0d8dedd594544a98b1a6339d8388d4c5 [2021-11-23 02:14:45,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:14:45,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:14:45,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:45,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:14:45,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:14:45,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:45" (1/1) ... [2021-11-23 02:14:45,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a42c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:45, skipping insertion in model container [2021-11-23 02:14:45,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:45" (1/1) ... [2021-11-23 02:14:45,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:14:45,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:14:46,626 WARN L230 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_1375af31-d732-4258-8e90-bb983b75b924/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c[64121,64134] [2021-11-23 02:14:46,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:46,662 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:14:46,782 WARN L230 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_1375af31-d732-4258-8e90-bb983b75b924/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c[64121,64134] [2021-11-23 02:14:46,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:46,827 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:14:46,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46 WrapperNode [2021-11-23 02:14:46,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:46,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:46,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:14:46,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:14:46,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:46,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:46,948 INFO L137 Inliner]: procedures = 129, calls = 215, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 879 [2021-11-23 02:14:46,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:46,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:14:46,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:14:46,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:14:46,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:46,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:46,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:46,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:47,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:47,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:47,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:47,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:14:47,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:14:47,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:14:47,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:14:47,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (1/1) ... [2021-11-23 02:14:47,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:47,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:14:47,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:14:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:14:47,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:14:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:14:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:14:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:14:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:14:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:14:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:14:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:14:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:14:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:14:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:14:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:14:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:14:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:14:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:14:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:14:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:14:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:14:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:14:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:14:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:14:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:14:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:14:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:14:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:14:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:14:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:14:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:14:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:14:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:14:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:14:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:14:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:14:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:14:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:14:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:14:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:14:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:14:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:14:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:14:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:14:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:14:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:14:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:14:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:14:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:14:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:14:47,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:14:47,524 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:14:47,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:14:48,353 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:14:48,769 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:14:48,769 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:14:48,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:48 BoogieIcfgContainer [2021-11-23 02:14:48,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:14:48,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:14:48,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:14:48,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:14:48,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:45" (1/3) ... [2021-11-23 02:14:48,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a57c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:48, skipping insertion in model container [2021-11-23 02:14:48,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:46" (2/3) ... [2021-11-23 02:14:48,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a57c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:48, skipping insertion in model container [2021-11-23 02:14:48,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:48" (3/3) ... [2021-11-23 02:14:48,782 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product28.cil.c [2021-11-23 02:14:48,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:14:48,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:14:48,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:14:48,853 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:14:48,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:14:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 02:14:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:14:48,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:48,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:48,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:48,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2052915556, now seen corresponding path program 1 times [2021-11-23 02:14:48,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:48,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775535856] [2021-11-23 02:14:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:48,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:49,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775535856] [2021-11-23 02:14:49,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775535856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:49,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:49,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:14:49,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656083866] [2021-11-23 02:14:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:49,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:14:49,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:49,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:14:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:49,316 INFO L87 Difference]: Start difference. First operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:14:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:49,500 INFO L93 Difference]: Finished difference Result 285 states and 374 transitions. [2021-11-23 02:14:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:14:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2021-11-23 02:14:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:49,518 INFO L225 Difference]: With dead ends: 285 [2021-11-23 02:14:49,518 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 02:14:49,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:49,532 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:49,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 02:14:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-23 02:14:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-23 02:14:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 241 transitions. [2021-11-23 02:14:49,627 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 241 transitions. Word has length 77 [2021-11-23 02:14:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:49,629 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 241 transitions. [2021-11-23 02:14:49,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:14:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 241 transitions. [2021-11-23 02:14:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:14:49,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:49,644 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:49,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:14:49,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1532515591, now seen corresponding path program 1 times [2021-11-23 02:14:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184925751] [2021-11-23 02:14:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:49,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:49,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:49,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184925751] [2021-11-23 02:14:49,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184925751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:49,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:49,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:49,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785270041] [2021-11-23 02:14:49,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:49,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:49,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:49,844 INFO L87 Difference]: Start difference. First operand 181 states and 241 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:14:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:49,992 INFO L93 Difference]: Finished difference Result 281 states and 362 transitions. [2021-11-23 02:14:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:49,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2021-11-23 02:14:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:50,000 INFO L225 Difference]: With dead ends: 281 [2021-11-23 02:14:50,000 INFO L226 Difference]: Without dead ends: 183 [2021-11-23 02:14:50,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:50,009 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:50,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 421 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-23 02:14:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-23 02:14:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 111 states have internal predecessors, (140), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-23 02:14:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 243 transitions. [2021-11-23 02:14:50,045 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 243 transitions. Word has length 78 [2021-11-23 02:14:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:50,047 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 243 transitions. [2021-11-23 02:14:50,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:14:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 243 transitions. [2021-11-23 02:14:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:14:50,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:50,050 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:50,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:14:50,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash 458499150, now seen corresponding path program 1 times [2021-11-23 02:14:50,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:50,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792000117] [2021-11-23 02:14:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:50,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:50,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:50,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792000117] [2021-11-23 02:14:50,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792000117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:50,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:50,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:50,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717527455] [2021-11-23 02:14:50,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:50,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:50,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:50,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:50,208 INFO L87 Difference]: Start difference. First operand 183 states and 243 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:14:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:50,335 INFO L93 Difference]: Finished difference Result 396 states and 545 transitions. [2021-11-23 02:14:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2021-11-23 02:14:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:50,341 INFO L225 Difference]: With dead ends: 396 [2021-11-23 02:14:50,341 INFO L226 Difference]: Without dead ends: 231 [2021-11-23 02:14:50,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:50,349 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 57 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:50,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 439 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-23 02:14:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2021-11-23 02:14:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 143 states have internal predecessors, (193), 63 states have call successors, (63), 22 states have call predecessors, (63), 22 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 02:14:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 318 transitions. [2021-11-23 02:14:50,390 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 318 transitions. Word has length 83 [2021-11-23 02:14:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:50,392 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 318 transitions. [2021-11-23 02:14:50,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:14:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 318 transitions. [2021-11-23 02:14:50,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 02:14:50,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:50,397 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:50,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:14:50,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1962749151, now seen corresponding path program 1 times [2021-11-23 02:14:50,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:50,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180172589] [2021-11-23 02:14:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:50,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:50,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180172589] [2021-11-23 02:14:50,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180172589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247435766] [2021-11-23 02:14:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:50,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:50,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:50,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:50,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:14:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:50,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:14:50,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:51,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:51,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247435766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:14:51,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078760298] [2021-11-23 02:14:51,390 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 02:14:51,390 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:51,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:51,400 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:51,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:15:19,244 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:15:19,623 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:15:20,008 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:15:52,684 WARN L227 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:16,700 WARN L227 SmtUtils]: Spent 13.81s on a formula simplification. DAG size of input: 585 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:32,041 WARN L227 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:37,633 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 330 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:43,214 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 328 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:48,760 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 549 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:48,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2078760298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:48,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:48,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:16:48,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005245180] [2021-11-23 02:16:48,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:48,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:16:48,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:16:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:16:48,777 INFO L87 Difference]: Start difference. First operand 226 states and 318 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:16:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:56,537 INFO L93 Difference]: Finished difference Result 531 states and 797 transitions. [2021-11-23 02:16:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:16:56,538 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2021-11-23 02:16:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:56,542 INFO L225 Difference]: With dead ends: 531 [2021-11-23 02:16:56,542 INFO L226 Difference]: Without dead ends: 323 [2021-11-23 02:16:56,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 88.8s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:16:56,544 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:56,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 3436 Invalid, 2020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:16:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-23 02:16:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 249. [2021-11-23 02:16:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 162 states have (on average 1.3950617283950617) internal successors, (226), 165 states have internal predecessors, (226), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 02:16:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 351 transitions. [2021-11-23 02:16:56,624 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 351 transitions. Word has length 84 [2021-11-23 02:16:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 351 transitions. [2021-11-23 02:16:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:16:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 351 transitions. [2021-11-23 02:16:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 02:16:56,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:56,628 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:56,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:16:56,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:56,841 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:56,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1634680546, now seen corresponding path program 1 times [2021-11-23 02:16:56,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:56,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931338754] [2021-11-23 02:16:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:56,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:16:56,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931338754] [2021-11-23 02:16:56,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931338754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:56,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:56,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:16:56,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596608161] [2021-11-23 02:16:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:56,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:56,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:56,942 INFO L87 Difference]: Start difference. First operand 249 states and 351 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:16:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:57,160 INFO L93 Difference]: Finished difference Result 591 states and 866 transitions. [2021-11-23 02:16:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2021-11-23 02:16:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:57,167 INFO L225 Difference]: With dead ends: 591 [2021-11-23 02:16:57,167 INFO L226 Difference]: Without dead ends: 366 [2021-11-23 02:16:57,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:57,169 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:57,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 434 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-23 02:16:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 361. [2021-11-23 02:16:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 249 states have (on average 1.4538152610441768) internal successors, (362), 252 states have internal predecessors, (362), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-23 02:16:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 537 transitions. [2021-11-23 02:16:57,313 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 537 transitions. Word has length 89 [2021-11-23 02:16:57,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:57,314 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 537 transitions. [2021-11-23 02:16:57,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:16:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 537 transitions. [2021-11-23 02:16:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 02:16:57,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:57,321 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:57,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:16:57,321 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:57,322 INFO L85 PathProgramCache]: Analyzing trace with hash -641083086, now seen corresponding path program 1 times [2021-11-23 02:16:57,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:57,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969771368] [2021-11-23 02:16:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:57,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:16:57,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969771368] [2021-11-23 02:16:57,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969771368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327327253] [2021-11-23 02:16:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:57,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:57,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:57,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:57,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:16:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:57,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:57,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:16:57,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:16:58,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327327253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:58,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2096128958] [2021-11-23 02:16:58,081 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2021-11-23 02:16:58,081 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:58,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:58,084 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:58,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:33,477 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:17:33,738 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:17:34,013 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:18:08,164 WARN L227 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:32,671 WARN L227 SmtUtils]: Spent 14.19s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:53,297 WARN L227 SmtUtils]: Spent 19.12s on a formula simplification. DAG size of input: 595 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:58,973 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 334 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:04,615 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 332 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:13,537 WARN L227 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 574 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:22,454 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 570 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:28,330 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 568 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:30,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2096128958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:19:30,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:19:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:19:30,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141849094] [2021-11-23 02:19:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:30,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:19:30,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:19:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:19:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:19:30,759 INFO L87 Difference]: Start difference. First operand 361 states and 537 transitions. Second operand has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-23 02:19:37,533 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 394 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:51,786 WARN L227 SmtUtils]: Spent 14.05s on a formula simplification. DAG size of input: 543 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:58,281 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 391 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:04,692 WARN L227 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 389 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:28,514 INFO L93 Difference]: Finished difference Result 816 states and 1274 transitions. [2021-11-23 02:20:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:20:28,517 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2021-11-23 02:20:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:28,522 INFO L225 Difference]: With dead ends: 816 [2021-11-23 02:20:28,522 INFO L226 Difference]: Without dead ends: 518 [2021-11-23 02:20:28,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 166.9s TimeCoverageRelationStatistics Valid=182, Invalid=1224, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 02:20:28,525 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 293 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:28,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 3258 Invalid, 2187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 02:20:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-23 02:20:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 423. [2021-11-23 02:20:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 307 states have (on average 1.501628664495114) internal successors, (461), 312 states have internal predecessors, (461), 91 states have call successors, (91), 24 states have call predecessors, (91), 24 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-23 02:20:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 642 transitions. [2021-11-23 02:20:28,705 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 642 transitions. Word has length 90 [2021-11-23 02:20:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:28,705 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 642 transitions. [2021-11-23 02:20:28,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-23 02:20:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 642 transitions. [2021-11-23 02:20:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:20:28,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:28,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:28,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:20:28,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:28,925 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:28,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:28,926 INFO L85 PathProgramCache]: Analyzing trace with hash 824677499, now seen corresponding path program 1 times [2021-11-23 02:20:28,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:20:28,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950099028] [2021-11-23 02:20:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:28,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:20:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:20:29,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:20:29,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950099028] [2021-11-23 02:20:29,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950099028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:20:29,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823622734] [2021-11-23 02:20:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:29,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:20:29,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:20:29,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:20:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:29,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:20:29,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:20:29,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:20:29,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823622734] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:20:29,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204493295] [2021-11-23 02:20:29,756 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2021-11-23 02:20:29,757 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:20:29,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:20:29,758 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:20:29,759 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:21:03,923 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:21:04,214 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2021-11-23 02:21:04,316 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2021-11-23 02:21:04,421 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2021-11-23 02:21:04,818 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:21:05,070 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:21:38,115 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:07,270 WARN L227 SmtUtils]: Spent 18.77s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:17,948 WARN L227 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:37,316 WARN L227 SmtUtils]: Spent 9.63s on a formula simplification. DAG size of input: 562 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [204493295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:44,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:22:44,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-23 02:22:44,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718975794] [2021-11-23 02:22:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:44,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 02:22:44,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:22:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 02:22:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 02:22:44,561 INFO L87 Difference]: Start difference. First operand 423 states and 642 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2021-11-23 02:22:53,580 WARN L227 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 598 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:23:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:23:04,970 INFO L93 Difference]: Finished difference Result 880 states and 1377 transitions. [2021-11-23 02:23:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:23:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2021-11-23 02:23:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:23:04,976 INFO L225 Difference]: With dead ends: 880 [2021-11-23 02:23:04,976 INFO L226 Difference]: Without dead ends: 582 [2021-11-23 02:23:04,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 110.2s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 02:23:04,979 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 145 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 3207 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:23:04,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 3959 Invalid, 3223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3207 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 02:23:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-23 02:23:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 508. [2021-11-23 02:23:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 384 states have (on average 1.5260416666666667) internal successors, (586), 391 states have internal predecessors, (586), 96 states have call successors, (96), 27 states have call predecessors, (96), 27 states have return successors, (95), 91 states have call predecessors, (95), 95 states have call successors, (95) [2021-11-23 02:23:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 777 transitions. [2021-11-23 02:23:05,194 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 777 transitions. Word has length 93 [2021-11-23 02:23:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:23:05,195 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 777 transitions. [2021-11-23 02:23:05,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2021-11-23 02:23:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 777 transitions. [2021-11-23 02:23:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 02:23:05,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:05,199 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:23:05,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 02:23:05,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:23:05,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:05,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1995677986, now seen corresponding path program 1 times [2021-11-23 02:23:05,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:23:05,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662013817] [2021-11-23 02:23:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:05,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:23:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:23:05,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:23:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662013817] [2021-11-23 02:23:05,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662013817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:23:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585705152] [2021-11-23 02:23:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:05,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:23:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:23:05,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:23:05,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:23:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:05,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:23:05,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:23:05,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:23:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:23:06,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585705152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:23:06,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782438463] [2021-11-23 02:23:06,139 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2021-11-23 02:23:06,139 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:23:06,141 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:23:06,141 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:23:06,142 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:23:36,841 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:23:37,096 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:23:37,355 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:24:09,505 WARN L227 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:34,841 WARN L227 SmtUtils]: Spent 14.87s on a formula simplification. DAG size of input: 601 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:51,473 WARN L227 SmtUtils]: Spent 14.97s on a formula simplification. DAG size of input: 603 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:57,292 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 338 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:03,137 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 336 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:09,854 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 582 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:16,562 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 578 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:25,708 WARN L227 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 580 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:34,903 WARN L227 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 576 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:44,003 WARN L227 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 578 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:53,087 WARN L227 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 574 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:59,728 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 576 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:06,473 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 572 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:12,496 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 572 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:12,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [782438463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:12,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:26:12,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2021-11-23 02:26:12,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176942734] [2021-11-23 02:26:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:12,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 02:26:12,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 02:26:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:26:12,501 INFO L87 Difference]: Start difference. First operand 508 states and 777 transitions. Second operand has 29 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:26:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:19,327 INFO L93 Difference]: Finished difference Result 949 states and 1485 transitions. [2021-11-23 02:26:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 02:26:19,328 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 92 [2021-11-23 02:26:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:19,333 INFO L225 Difference]: With dead ends: 949 [2021-11-23 02:26:19,333 INFO L226 Difference]: Without dead ends: 608 [2021-11-23 02:26:19,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 155.2s TimeCoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:26:19,336 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 247 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:19,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 2836 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:26:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-23 02:26:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 527. [2021-11-23 02:26:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 403 states have (on average 1.5235732009925558) internal successors, (614), 410 states have internal predecessors, (614), 96 states have call successors, (96), 27 states have call predecessors, (96), 27 states have return successors, (95), 91 states have call predecessors, (95), 95 states have call successors, (95) [2021-11-23 02:26:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 805 transitions. [2021-11-23 02:26:19,569 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 805 transitions. Word has length 92 [2021-11-23 02:26:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:19,570 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 805 transitions. [2021-11-23 02:26:19,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:26:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 805 transitions. [2021-11-23 02:26:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 02:26:19,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:19,574 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:19,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:19,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:19,801 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2043473338, now seen corresponding path program 1 times [2021-11-23 02:26:19,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:19,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611893326] [2021-11-23 02:26:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:19,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:26:19,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611893326] [2021-11-23 02:26:19,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611893326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:26:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942962225] [2021-11-23 02:26:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:19,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:19,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:19,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1375af31-d732-4258-8e90-bb983b75b924/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:26:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:20,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:26:20,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:26:20,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:26:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:26:20,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942962225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:26:20,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591879185] [2021-11-23 02:26:20,471 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2021-11-23 02:26:20,471 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:26:20,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:26:20,471 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:26:20,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs