./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur --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 c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:29:59,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:29:59,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:29:59,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:29:59,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:29:59,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:29:59,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:29:59,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:29:59,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:29:59,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:29:59,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:29:59,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:29:59,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:29:59,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:29:59,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:29:59,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:29:59,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:29:59,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:29:59,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:29:59,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:29:59,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:29:59,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:29:59,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:29:59,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:29:59,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:29:59,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:29:59,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:29:59,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:29:59,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:29:59,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:29:59,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:29:59,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:29:59,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:29:59,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:29:59,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:29:59,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:29:59,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:29:59,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:29:59,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:29:59,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:29:59,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:29:59,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:29:59,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:29:59,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:29:59,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:29:59,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:29:59,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:29:59,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:29:59,595 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:29:59,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:29:59,596 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:29:59,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:29:59,596 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:29:59,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:29:59,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:29:59,597 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:29:59,597 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:29:59,597 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:29:59,598 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:29:59,598 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:29:59,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:29:59,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:29:59,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:29:59,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:29:59,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:29:59,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:29:59,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:29:59,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:29:59,600 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:29:59,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:29:59,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:29:59,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:29:59,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:29:59,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:29:59,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:29:59,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:29:59,602 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:29:59,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:29:59,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:29:59,603 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:29:59,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:29:59,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:29:59,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:29:59,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 [2022-11-25 23:29:59,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:29:59,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:29:59,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:29:59,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:29:59,924 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:29:59,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2022-11-25 23:30:03,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:30:03,746 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:30:03,749 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2022-11-25 23:30:03,779 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/data/7665612fb/666e9a66cb10444cabaafe938fae90a3/FLAG45f8449c2 [2022-11-25 23:30:03,796 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/data/7665612fb/666e9a66cb10444cabaafe938fae90a3 [2022-11-25 23:30:03,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:30:03,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:30:03,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:03,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:30:03,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:30:03,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:03" (1/1) ... [2022-11-25 23:30:03,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f18f2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:03, skipping insertion in model container [2022-11-25 23:30:03,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:03" (1/1) ... [2022-11-25 23:30:03,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:30:03,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:30:04,156 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,236 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,238 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,244 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,507 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,514 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,527 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,557 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2022-11-25 23:30:04,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:04,597 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:30:04,621 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,626 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,627 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,630 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,690 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,692 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,698 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:30:04,710 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2022-11-25 23:30:04,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:04,768 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:30:04,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04 WrapperNode [2022-11-25 23:30:04,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:04,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:04,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:30:04,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:30:04,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,944 INFO L138 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 909 [2022-11-25 23:30:04,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:04,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:30:04,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:30:04,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:30:04,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:30:05,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:30:05,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:30:05,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:30:05,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:05,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:05,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:30:05,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:30:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 23:30:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 23:30:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 23:30:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 23:30:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 23:30:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 23:30:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 23:30:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 23:30:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 23:30:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 23:30:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 23:30:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 23:30:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 23:30:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 23:30:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 23:30:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 23:30:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 23:30:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 23:30:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 23:30:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 23:30:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 23:30:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 23:30:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 23:30:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 23:30:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 23:30:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:30:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 23:30:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 23:30:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 23:30:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 23:30:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 23:30:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 23:30:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 23:30:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 23:30:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 23:30:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 23:30:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 23:30:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 23:30:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 23:30:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 23:30:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 23:30:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 23:30:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 23:30:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 23:30:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 23:30:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 23:30:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:30:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 23:30:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 23:30:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:30:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:30:05,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:30:05,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:30:06,628 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:30:07,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:30:07,334 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:30:07,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:07 BoogieIcfgContainer [2022-11-25 23:30:07,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:30:07,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:30:07,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:30:07,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:30:07,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:30:03" (1/3) ... [2022-11-25 23:30:07,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466cbc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:07, skipping insertion in model container [2022-11-25 23:30:07,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (2/3) ... [2022-11-25 23:30:07,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466cbc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:07, skipping insertion in model container [2022-11-25 23:30:07,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:07" (3/3) ... [2022-11-25 23:30:07,355 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product30.cil.c [2022-11-25 23:30:07,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:30:07,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:30:07,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:30:07,463 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62b493a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:30:07,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:30:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-25 23:30:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 23:30:07,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:07,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 23:30:07,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1569696340, now seen corresponding path program 1 times [2022-11-25 23:30:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:07,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577129080] [2022-11-25 23:30:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:08,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:08,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577129080] [2022-11-25 23:30:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577129080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:08,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:08,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:30:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488486292] [2022-11-25 23:30:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:30:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:30:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:30:08,091 INFO L87 Difference]: Start difference. First operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:08,336 INFO L93 Difference]: Finished difference Result 295 states and 386 transitions. [2022-11-25 23:30:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:30:08,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-11-25 23:30:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:08,359 INFO L225 Difference]: With dead ends: 295 [2022-11-25 23:30:08,366 INFO L226 Difference]: Without dead ends: 186 [2022-11-25 23:30:08,377 INFO L412 NwaCegarLoop]: 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 [2022-11-25 23:30:08,384 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:08,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:30:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-25 23:30:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-25 23:30:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 112 states have internal predecessors, (142), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-25 23:30:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 247 transitions. [2022-11-25 23:30:08,470 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 247 transitions. Word has length 64 [2022-11-25 23:30:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:08,472 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 247 transitions. [2022-11-25 23:30:08,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 247 transitions. [2022-11-25 23:30:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 23:30:08,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:08,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 23:30:08,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:30:08,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash 769987218, now seen corresponding path program 1 times [2022-11-25 23:30:08,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:08,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938506418] [2022-11-25 23:30:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:08,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:08,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:08,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938506418] [2022-11-25 23:30:08,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938506418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:08,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:08,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:30:08,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806219090] [2022-11-25 23:30:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:08,711 INFO L87 Difference]: Start difference. First operand 186 states and 247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:08,853 INFO L93 Difference]: Finished difference Result 291 states and 374 transitions. [2022-11-25 23:30:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:08,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-25 23:30:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:08,857 INFO L225 Difference]: With dead ends: 291 [2022-11-25 23:30:08,857 INFO L226 Difference]: Without dead ends: 188 [2022-11-25 23:30:08,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:08,860 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:08,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:30:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-25 23:30:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-25 23:30:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-25 23:30:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2022-11-25 23:30:08,889 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 65 [2022-11-25 23:30:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:08,890 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2022-11-25 23:30:08,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2022-11-25 23:30:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 23:30:08,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:08,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:30:08,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1400542950, now seen corresponding path program 1 times [2022-11-25 23:30:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:08,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041886929] [2022-11-25 23:30:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:08,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:09,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:09,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041886929] [2022-11-25 23:30:09,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041886929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:09,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:09,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:30:09,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763221] [2022-11-25 23:30:09,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:09,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:09,150 INFO L87 Difference]: Start difference. First operand 188 states and 249 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:09,325 INFO L93 Difference]: Finished difference Result 406 states and 557 transitions. [2022-11-25 23:30:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:09,326 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-25 23:30:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:09,332 INFO L225 Difference]: With dead ends: 406 [2022-11-25 23:30:09,332 INFO L226 Difference]: Without dead ends: 236 [2022-11-25 23:30:09,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:09,342 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 57 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:09,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 436 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:30:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-25 23:30:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2022-11-25 23:30:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 143 states have (on average 1.3776223776223777) internal successors, (197), 146 states have internal predecessors, (197), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-25 23:30:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 324 transitions. [2022-11-25 23:30:09,384 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 324 transitions. Word has length 70 [2022-11-25 23:30:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:09,387 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 324 transitions. [2022-11-25 23:30:09,387 INFO L496 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 324 transitions. [2022-11-25 23:30:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 23:30:09,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:09,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:09,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:30:09,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2019651252, now seen corresponding path program 1 times [2022-11-25 23:30:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:09,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75312599] [2022-11-25 23:30:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:09,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:09,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75312599] [2022-11-25 23:30:09,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75312599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:30:09,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063233913] [2022-11-25 23:30:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:09,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:30:09,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:09,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:30:09,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:30:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:10,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:30:10,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:10,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:30:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:10,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063233913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:30:10,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229036852] [2022-11-25 23:30:10,257 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-25 23:30:10,258 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:30:10,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:30:10,268 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:30:10,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:30:55,790 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-25 23:30:56,077 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-25 23:30:56,394 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-11-25 23:31:39,311 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-11-25 23:31:39,623 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-11-25 23:32:03,494 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-11-25 23:32:03,782 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2022-11-25 23:32:03,863 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 258 for LOIs [2022-11-25 23:32:03,972 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-25 23:32:04,769 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:32:43,887 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 480 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:32:53,049 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 490 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:33:02,135 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 502 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:33:09,675 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 512 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:33:35,197 WARN L233 SmtUtils]: Spent 25.13s on a formula simplification. DAG size of input: 591 DAG size of output: 466 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:33:44,412 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 564 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:33:55,910 WARN L233 SmtUtils]: Spent 11.11s on a formula simplification. DAG size of input: 566 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:06,318 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 562 DAG size of output: 419 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:14,625 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 584 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:25,481 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 497 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:40,378 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 548 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:59,658 WARN L233 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 544 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:05,675 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 557 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:20,579 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 439 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:27,097 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 465 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:48,199 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 540 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:54,539 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 542 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:02,107 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 584 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:07,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [229036852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:07,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:36:07,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-11-25 23:36:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109300904] [2022-11-25 23:36:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:07,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 23:36:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:07,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 23:36:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2617, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 23:36:07,515 INFO L87 Difference]: Start difference. First operand 231 states and 324 transitions. Second operand has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 23:36:21,974 WARN L233 SmtUtils]: Spent 10.34s on a formula simplification. DAG size of input: 575 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:32,562 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 515 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:38,750 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 511 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:54,334 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 487 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:38,778 INFO L93 Difference]: Finished difference Result 631 states and 963 transitions. [2022-11-25 23:37:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-25 23:37:38,779 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2022-11-25 23:37:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:38,782 INFO L225 Difference]: With dead ends: 631 [2022-11-25 23:37:38,783 INFO L226 Difference]: Without dead ends: 418 [2022-11-25 23:37:38,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 300.3s TimeCoverageRelationStatistics Valid=212, Invalid=3820, Unknown=0, NotChecked=0, Total=4032 [2022-11-25 23:37:38,787 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 255 mSDsluCounter, 6796 mSDsCounter, 0 mSdLazyCounter, 7660 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 7068 SdHoareTripleChecker+Invalid, 7687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:38,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 7068 Invalid, 7687 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [27 Valid, 7660 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2022-11-25 23:37:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-25 23:37:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 285. [2022-11-25 23:37:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 183 states have (on average 1.360655737704918) internal successors, (249), 186 states have internal predecessors, (249), 72 states have call successors, (72), 31 states have call predecessors, (72), 29 states have return successors, (71), 69 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-25 23:37:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 392 transitions. [2022-11-25 23:37:39,005 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 392 transitions. Word has length 71 [2022-11-25 23:37:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:39,005 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 392 transitions. [2022-11-25 23:37:39,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 23:37:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 392 transitions. [2022-11-25 23:37:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:37:39,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:39,008 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:37:39,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:37:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:37:39,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:37:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1779507682, now seen corresponding path program 1 times [2022-11-25 23:37:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:39,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036742991] [2022-11-25 23:37:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 23:37:39,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:39,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036742991] [2022-11-25 23:37:39,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036742991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:39,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:39,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:39,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373413823] [2022-11-25 23:37:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:39,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:39,339 INFO L87 Difference]: Start difference. First operand 285 states and 392 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:37:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:39,837 INFO L93 Difference]: Finished difference Result 630 states and 911 transitions. [2022-11-25 23:37:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:39,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-25 23:37:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:39,842 INFO L225 Difference]: With dead ends: 630 [2022-11-25 23:37:39,843 INFO L226 Difference]: Without dead ends: 400 [2022-11-25 23:37:39,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:39,844 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 55 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:39,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 455 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:37:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-25 23:37:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 395. [2022-11-25 23:37:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 268 states have (on average 1.4291044776119404) internal successors, (383), 271 states have internal predecessors, (383), 97 states have call successors, (97), 31 states have call predecessors, (97), 29 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-25 23:37:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 576 transitions. [2022-11-25 23:37:40,159 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 576 transitions. Word has length 76 [2022-11-25 23:37:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:40,160 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 576 transitions. [2022-11-25 23:37:40,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:37:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 576 transitions. [2022-11-25 23:37:40,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 23:37:40,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:40,163 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:37:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:37:40,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:37:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash -674473255, now seen corresponding path program 1 times [2022-11-25 23:37:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:40,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237684412] [2022-11-25 23:37:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 23:37:40,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237684412] [2022-11-25 23:37:40,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237684412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:37:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233773642] [2022-11-25 23:37:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:40,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:37:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:37:40,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:37:40,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:37:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:40,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:37:40,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:37:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 23:37:40,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:37:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 23:37:40,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233773642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:37:40,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1490514850] [2022-11-25 23:37:40,788 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-25 23:37:40,789 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:37:40,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:37:40,791 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:37:40,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:38:18,363 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-25 23:38:18,645 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-11-25 23:38:18,929 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:38:46,207 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 477 DAG size of output: 269 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:02,195 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 490 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:09,564 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 502 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:30,381 WARN L233 SmtUtils]: Spent 14.47s on a formula simplification. DAG size of input: 583 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:50,972 WARN L233 SmtUtils]: Spent 20.25s on a formula simplification. DAG size of input: 593 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:15,696 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 584 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:15,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1490514850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:40:15,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:40:15,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-25 23:40:15,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111255679] [2022-11-25 23:40:15,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:40:15,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 23:40:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:40:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 23:40:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-25 23:40:15,708 INFO L87 Difference]: Start difference. First operand 395 states and 576 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-25 23:40:24,387 WARN L233 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 452 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:39,263 WARN L233 SmtUtils]: Spent 14.63s on a formula simplification. DAG size of input: 568 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:46,243 WARN L233 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 341 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:53,471 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 339 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:00,434 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 341 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:07,346 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 339 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:16,969 INFO L93 Difference]: Finished difference Result 812 states and 1238 transitions. [2022-11-25 23:41:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 23:41:16,972 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2022-11-25 23:41:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:16,976 INFO L225 Difference]: With dead ends: 812 [2022-11-25 23:41:16,976 INFO L226 Difference]: Without dead ends: 509 [2022-11-25 23:41:16,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 166.3s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-25 23:41:16,979 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 248 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:16,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 3341 Invalid, 2231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-25 23:41:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-25 23:41:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 438. [2022-11-25 23:41:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 308 states have (on average 1.4545454545454546) internal successors, (448), 312 states have internal predecessors, (448), 99 states have call successors, (99), 32 states have call predecessors, (99), 30 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-25 23:41:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 645 transitions. [2022-11-25 23:41:17,333 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 645 transitions. Word has length 77 [2022-11-25 23:41:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:17,334 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 645 transitions. [2022-11-25 23:41:17,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-25 23:41:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 645 transitions. [2022-11-25 23:41:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 23:41:17,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:17,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:17,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:41:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:41:17,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:41:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -828231770, now seen corresponding path program 1 times [2022-11-25 23:41:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130307160] [2022-11-25 23:41:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:41:17,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130307160] [2022-11-25 23:41:17,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130307160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:41:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724256258] [2022-11-25 23:41:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:17,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:41:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:17,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:41:17,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e7f335-75e4-4872-9044-f4031f187038/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:41:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:18,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:41:18,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:41:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:41:18,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:41:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:41:18,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724256258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:41:18,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [176399472] [2022-11-25 23:41:18,249 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-25 23:41:18,249 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:41:18,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:41:18,250 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:41:18,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:42:01,100 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-25 23:42:01,388 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-25 23:42:01,450 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 446 for LOIs [2022-11-25 23:42:01,756 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 253 for LOIs [2022-11-25 23:42:01,852 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-25 23:42:02,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:42:42,478 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 490 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:49,812 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 502 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:15,814 WARN L233 SmtUtils]: Spent 19.61s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:26,655 WARN L233 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 636 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)