./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:52:51,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:52:51,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:52:51,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:52:51,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:52:51,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:52:51,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:52:51,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:52:51,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:52:51,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:52:51,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:52:51,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:52:51,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:52:51,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:52:51,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:52:51,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:52:51,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:52:51,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:52:51,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:52:51,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:52:51,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:52:51,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:52:51,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:52:51,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:52:51,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:52:51,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:52:51,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:52:51,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:52:51,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:52:51,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:52:51,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:52:51,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:52:51,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:52:51,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:52:51,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:52:51,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:52:51,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:52:51,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:52:51,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:52:51,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:52:51,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:52:51,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:52:51,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:52:51,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:52:51,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:52:51,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:52:51,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:52:51,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:52:51,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:52:51,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:52:51,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:52:51,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:52:51,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:52:51,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:52:51,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:52:51,568 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:52:51,568 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:52:51,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:52:51,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:52:51,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:52:51,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:52:51,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:52:51,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:52:51,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:52:51,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:52:51,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:52:51,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:52:51,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:52:51,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:52:51,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:52:51,572 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:52:51,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:52:51,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:52:51,573 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:52:51,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:52:51,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:52:51,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:52:51,573 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_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2022-12-14 06:52:51,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:52:51,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:52:51,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:52:51,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:52:51,786 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:52:51,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2022-12-14 06:52:54,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:52:54,582 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:52:54,582 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2022-12-14 06:52:54,597 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/data/42f6f29e9/1865eb92d92446d9ac4d648eb106eddd/FLAGd6a2c7742 [2022-12-14 06:52:54,611 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/data/42f6f29e9/1865eb92d92446d9ac4d648eb106eddd [2022-12-14 06:52:54,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:52:54,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:52:54,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:52:54,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:52:54,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:52:54,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:52:54" (1/1) ... [2022-12-14 06:52:54,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bbb6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:54, skipping insertion in model container [2022-12-14 06:52:54,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:52:54" (1/1) ... [2022-12-14 06:52:54,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:52:54,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:52:54,892 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:54,896 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:54,986 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:54,987 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:54,989 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:54,994 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,034 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_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-12-14 06:52:55,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:52:55,061 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:52:55,099 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,101 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,131 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,132 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,135 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,139 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:52:55,151 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_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-12-14 06:52:55,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:52:55,179 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:52:55,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55 WrapperNode [2022-12-14 06:52:55,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:52:55,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:52:55,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:52:55,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:52:55,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,249 INFO L138 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 819 [2022-12-14 06:52:55,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:52:55,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:52:55,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:52:55,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:52:55,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:52:55,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:52:55,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:52:55,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:52:55,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (1/1) ... [2022-12-14 06:52:55,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:52:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:52:55,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:52:55,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:52:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 06:52:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 06:52:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 06:52:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 06:52:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 06:52:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 06:52:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 06:52:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 06:52:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 06:52:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 06:52:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 06:52:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 06:52:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 06:52:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 06:52:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 06:52:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 06:52:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 06:52:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:52:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 06:52:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 06:52:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 06:52:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 06:52:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 06:52:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 06:52:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 06:52:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 06:52:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 06:52:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 06:52:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 06:52:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 06:52:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 06:52:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 06:52:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 06:52:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 06:52:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:52:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 06:52:55,354 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 06:52:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:52:55,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:52:55,495 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:52:55,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:52:56,036 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:52:56,279 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:52:56,279 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:52:56,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:52:56 BoogieIcfgContainer [2022-12-14 06:52:56,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:52:56,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:52:56,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:52:56,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:52:56,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:52:54" (1/3) ... [2022-12-14 06:52:56,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2059a5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:52:56, skipping insertion in model container [2022-12-14 06:52:56,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:52:55" (2/3) ... [2022-12-14 06:52:56,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2059a5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:52:56, skipping insertion in model container [2022-12-14 06:52:56,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:52:56" (3/3) ... [2022-12-14 06:52:56,287 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2022-12-14 06:52:56,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:52:56,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:52:56,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:52:56,340 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;@3dd3402c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:52:56,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:52:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 87 states have (on average 1.367816091954023) internal successors, (119), 89 states have internal predecessors, (119), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-12-14 06:52:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 06:52:56,352 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:56,353 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] [2022-12-14 06:52:56,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:52:56,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1151425316, now seen corresponding path program 1 times [2022-12-14 06:52:56,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:56,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712951487] [2022-12-14 06:52:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:56,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:52:56,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:56,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712951487] [2022-12-14 06:52:56,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712951487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:56,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:56,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:52:56,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649211811] [2022-12-14 06:52:56,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:56,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:52:56,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:56,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:52:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:52:56,593 INFO L87 Difference]: Start difference. First operand has 144 states, 87 states have (on average 1.367816091954023) internal successors, (119), 89 states have internal predecessors, (119), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 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) [2022-12-14 06:52:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:56,675 INFO L93 Difference]: Finished difference Result 205 states and 268 transitions. [2022-12-14 06:52:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:52:56,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 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 [2022-12-14 06:52:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:56,686 INFO L225 Difference]: With dead ends: 205 [2022-12-14 06:52:56,686 INFO L226 Difference]: Without dead ends: 141 [2022-12-14 06:52:56,689 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 [2022-12-14 06:52:56,692 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:56,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:52:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-14 06:52:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-12-14 06:52:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 86 states have internal predecessors, (113), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-14 06:52:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 188 transitions. [2022-12-14 06:52:56,740 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 188 transitions. Word has length 65 [2022-12-14 06:52:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:56,741 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 188 transitions. [2022-12-14 06:52:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 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) [2022-12-14 06:52:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 188 transitions. [2022-12-14 06:52:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:52:56,745 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:56,746 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, 1] [2022-12-14 06:52:56,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:52:56,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:52:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1408867661, now seen corresponding path program 1 times [2022-12-14 06:52:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715259793] [2022-12-14 06:52:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:52:56,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:56,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715259793] [2022-12-14 06:52:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715259793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:56,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:56,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:52:56,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058124684] [2022-12-14 06:52:56,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:56,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:52:56,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:52:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:52:56,935 INFO L87 Difference]: Start difference. First operand 141 states and 188 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-12-14 06:52:57,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:57,014 INFO L93 Difference]: Finished difference Result 201 states and 256 transitions. [2022-12-14 06:52:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:52:57,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 66 [2022-12-14 06:52:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:57,016 INFO L225 Difference]: With dead ends: 201 [2022-12-14 06:52:57,017 INFO L226 Difference]: Without dead ends: 143 [2022-12-14 06:52:57,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:52:57,019 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:57,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 329 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:52:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-14 06:52:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-12-14 06:52:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.3218390804597702) internal successors, (115), 88 states have internal predecessors, (115), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-14 06:52:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2022-12-14 06:52:57,034 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 66 [2022-12-14 06:52:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:57,035 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2022-12-14 06:52:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-12-14 06:52:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2022-12-14 06:52:57,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 06:52:57,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:57,038 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] [2022-12-14 06:52:57,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:52:57,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:52:57,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash 579566644, now seen corresponding path program 1 times [2022-12-14 06:52:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:57,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220953319] [2022-12-14 06:52:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:57,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:52:57,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:57,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220953319] [2022-12-14 06:52:57,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220953319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:57,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:57,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:52:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124284892] [2022-12-14 06:52:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:52:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:52:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:52:57,164 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-12-14 06:52:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:57,238 INFO L93 Difference]: Finished difference Result 316 states and 439 transitions. [2022-12-14 06:52:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:52:57,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 71 [2022-12-14 06:52:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:57,240 INFO L225 Difference]: With dead ends: 316 [2022-12-14 06:52:57,240 INFO L226 Difference]: Without dead ends: 191 [2022-12-14 06:52:57,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:52:57,241 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 57 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:57,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 342 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:52:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-12-14 06:52:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2022-12-14 06:52:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 119 states have (on average 1.411764705882353) internal successors, (168), 120 states have internal predecessors, (168), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 06:52:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 265 transitions. [2022-12-14 06:52:57,254 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 265 transitions. Word has length 71 [2022-12-14 06:52:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:57,254 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 265 transitions. [2022-12-14 06:52:57,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-12-14 06:52:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 265 transitions. [2022-12-14 06:52:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:52:57,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:57,256 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] [2022-12-14 06:52:57,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:52:57,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:52:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2010531788, now seen corresponding path program 1 times [2022-12-14 06:52:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:57,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613909666] [2022-12-14 06:52:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:57,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:52:57,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613909666] [2022-12-14 06:52:57,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613909666] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:52:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473587198] [2022-12-14 06:52:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:57,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:52:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:52:57,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:52:57,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:52:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:52:57,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:52:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:52:57,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:52:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:52:57,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473587198] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:52:57,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893924693] [2022-12-14 06:52:57,745 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 06:52:57,745 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:52:57,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:52:57,754 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:52:57,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:53:27,093 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 06:53:27,373 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 06:53:27,656 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:54:09,222 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 583 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:54:18,423 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 570 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:54:23,763 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 568 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:54:24,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [893924693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:24,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:54:24,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 06:54:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878099519] [2022-12-14 06:54:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 06:54:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:54:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 06:54:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:54:24,552 INFO L87 Difference]: Start difference. First operand 186 states and 265 transitions. Second operand has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 06:54:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:29,324 INFO L93 Difference]: Finished difference Result 451 states and 691 transitions. [2022-12-14 06:54:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 06:54:29,325 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 72 [2022-12-14 06:54:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:29,330 INFO L225 Difference]: With dead ends: 451 [2022-12-14 06:54:29,330 INFO L226 Difference]: Without dead ends: 283 [2022-12-14 06:54:29,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 56.9s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:54:29,333 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 160 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:29,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2220 Invalid, 1636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-14 06:54:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-12-14 06:54:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 209. [2022-12-14 06:54:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 141 states have (on average 1.425531914893617) internal successors, (201), 142 states have internal predecessors, (201), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 06:54:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 298 transitions. [2022-12-14 06:54:29,413 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 298 transitions. Word has length 72 [2022-12-14 06:54:29,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:29,414 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 298 transitions. [2022-12-14 06:54:29,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 06:54:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 298 transitions. [2022-12-14 06:54:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 06:54:29,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:29,416 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] [2022-12-14 06:54:29,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:54:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:54:29,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1024735130, now seen corresponding path program 1 times [2022-12-14 06:54:29,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:54:29,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253057786] [2022-12-14 06:54:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:54:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:54:29,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:54:29,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253057786] [2022-12-14 06:54:29,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253057786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:29,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:29,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:54:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497084043] [2022-12-14 06:54:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:29,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:54:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:54:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:54:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:54:29,704 INFO L87 Difference]: Start difference. First operand 209 states and 298 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-12-14 06:54:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:29,909 INFO L93 Difference]: Finished difference Result 511 states and 760 transitions. [2022-12-14 06:54:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:54:29,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 77 [2022-12-14 06:54:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:29,911 INFO L225 Difference]: With dead ends: 511 [2022-12-14 06:54:29,911 INFO L226 Difference]: Without dead ends: 326 [2022-12-14 06:54:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:54:29,912 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 55 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:29,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 346 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:54:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-12-14 06:54:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2022-12-14 06:54:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 228 states have (on average 1.4780701754385965) internal successors, (337), 229 states have internal predecessors, (337), 74 states have call successors, (74), 18 states have call predecessors, (74), 18 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 06:54:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 484 transitions. [2022-12-14 06:54:30,037 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 484 transitions. Word has length 77 [2022-12-14 06:54:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:30,037 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 484 transitions. [2022-12-14 06:54:30,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-12-14 06:54:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 484 transitions. [2022-12-14 06:54:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 06:54:30,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:30,041 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, 1] [2022-12-14 06:54:30,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:54:30,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1808269405, now seen corresponding path program 1 times [2022-12-14 06:54:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:54:30,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236773739] [2022-12-14 06:54:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:54:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:54:30,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:54:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236773739] [2022-12-14 06:54:30,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236773739] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:54:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332266846] [2022-12-14 06:54:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:30,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:54:30,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:54:30,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:54:30,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:54:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:30,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:30,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:54:30,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:54:30,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332266846] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177085488] [2022-12-14 06:54:30,434 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-12-14 06:54:30,434 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:54:30,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:54:30,435 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:54:30,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:55:12,581 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 06:55:12,862 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 06:55:13,144 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:55:50,182 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 589 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:55:55,464 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 570 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:56:13,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1177085488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:56:13,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:56:13,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 06:56:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227046587] [2022-12-14 06:56:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:56:13,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 06:56:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:56:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 06:56:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-12-14 06:56:13,313 INFO L87 Difference]: Start difference. First operand 321 states and 484 transitions. Second operand has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 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) [2022-12-14 06:56:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:56:39,313 INFO L93 Difference]: Finished difference Result 736 states and 1168 transitions. [2022-12-14 06:56:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 06:56:39,314 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 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 78 [2022-12-14 06:56:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:56:39,318 INFO L225 Difference]: With dead ends: 736 [2022-12-14 06:56:39,318 INFO L226 Difference]: Without dead ends: 478 [2022-12-14 06:56:39,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=200, Invalid=1206, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 06:56:39,320 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 254 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:56:39,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 2262 Invalid, 1790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-14 06:56:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-12-14 06:56:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 383. [2022-12-14 06:56:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 289 states have internal predecessors, (436), 77 states have call successors, (77), 19 states have call predecessors, (77), 19 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2022-12-14 06:56:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 589 transitions. [2022-12-14 06:56:39,517 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 589 transitions. Word has length 78 [2022-12-14 06:56:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:56:39,518 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 589 transitions. [2022-12-14 06:56:39,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 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) [2022-12-14 06:56:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 589 transitions. [2022-12-14 06:56:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 06:56:39,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:56:39,520 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, 1] [2022-12-14 06:56:39,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:56:39,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:56:39,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:56:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:56:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1796361615, now seen corresponding path program 1 times [2022-12-14 06:56:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:56:39,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023179701] [2022-12-14 06:56:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:56:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:56:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:56:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:56:39,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:56:39,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023179701] [2022-12-14 06:56:39,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023179701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:56:39,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035999635] [2022-12-14 06:56:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:56:39,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:56:39,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:56:39,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:56:39,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:56:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:56:40,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:56:40,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:56:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:56:40,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:56:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:56:40,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035999635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:56:40,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [71064229] [2022-12-14 06:56:40,144 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 06:56:40,144 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:56:40,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:56:40,145 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:56:40,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:58:46,625 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 06:58:46,904 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-12-14 06:58:47,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-12-14 06:58:47,513 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 277 for LOIs [2022-12-14 06:58:47,640 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 06:58:47,928 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:59:45,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [71064229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:59:45,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:59:45,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-12-14 06:59:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062452086] [2022-12-14 06:59:45,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:59:45,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 06:59:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:59:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 06:59:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 06:59:45,522 INFO L87 Difference]: Start difference. First operand 383 states and 589 transitions. Second operand has 29 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 06:59:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:59:58,323 INFO L93 Difference]: Finished difference Result 773 states and 1221 transitions. [2022-12-14 06:59:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 06:59:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2022-12-14 06:59:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:59:58,326 INFO L225 Difference]: With dead ends: 773 [2022-12-14 06:59:58,326 INFO L226 Difference]: Without dead ends: 515 [2022-12-14 06:59:58,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 62.3s TimeCoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 06:59:58,327 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 201 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:59:58,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2584 Invalid, 2828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-14 06:59:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-12-14 06:59:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 423. [2022-12-14 06:59:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 318 states have (on average 1.5125786163522013) internal successors, (481), 323 states have internal predecessors, (481), 82 states have call successors, (82), 22 states have call predecessors, (82), 22 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 06:59:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 644 transitions. [2022-12-14 06:59:58,581 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 644 transitions. Word has length 81 [2022-12-14 06:59:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:59:58,581 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 644 transitions. [2022-12-14 06:59:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 06:59:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 644 transitions. [2022-12-14 06:59:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 06:59:58,583 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:59:58,583 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] [2022-12-14 06:59:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 06:59:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:59:58,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:59:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:59:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash 855507319, now seen corresponding path program 1 times [2022-12-14 06:59:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:59:58,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717992309] [2022-12-14 06:59:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:59:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:59:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:59:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:59:58,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:59:58,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717992309] [2022-12-14 06:59:58,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717992309] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:59:58,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634103960] [2022-12-14 06:59:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:59:58,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:59:58,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:59:58,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:59:58,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:59:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:59:59,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:59:59,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:59:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:59:59,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:59:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:59:59,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634103960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:59:59,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1888157481] [2022-12-14 06:59:59,148 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 06:59:59,148 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:59:59,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:59:59,149 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:59:59,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:00:35,989 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:00:36,265 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 07:00:36,551 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:20,823 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 601 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:01:30,389 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 578 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:01:35,891 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 576 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:01:41,801 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 576 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:02:00,578 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 572 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:02:06,702 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 570 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:02:15,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1888157481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:02:15,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:02:15,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-12-14 07:02:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913076986] [2022-12-14 07:02:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:02:15,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 07:02:15,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:02:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 07:02:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 07:02:15,589 INFO L87 Difference]: Start difference. First operand 423 states and 644 transitions. Second operand has 29 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 07:02:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:02:22,868 INFO L93 Difference]: Finished difference Result 822 states and 1295 transitions. [2022-12-14 07:02:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 07:02:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 80 [2022-12-14 07:02:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:02:22,872 INFO L225 Difference]: With dead ends: 822 [2022-12-14 07:02:22,872 INFO L226 Difference]: Without dead ends: 521 [2022-12-14 07:02:22,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 99.0s TimeCoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 07:02:22,874 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 135 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:02:22,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2419 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-12-14 07:02:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-12-14 07:02:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 442. [2022-12-14 07:02:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 337 states have (on average 1.510385756676558) internal successors, (509), 342 states have internal predecessors, (509), 82 states have call successors, (82), 22 states have call predecessors, (82), 22 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-14 07:02:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 672 transitions. [2022-12-14 07:02:23,173 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 672 transitions. Word has length 80 [2022-12-14 07:02:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:02:23,173 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 672 transitions. [2022-12-14 07:02:23,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 07:02:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 672 transitions. [2022-12-14 07:02:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 07:02:23,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:02:23,175 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:02:23,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:02:23,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:02:23,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:02:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:02:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2030299565, now seen corresponding path program 1 times [2022-12-14 07:02:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:02:23,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832659527] [2022-12-14 07:02:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:02:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:02:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:02:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 07:02:23,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:02:23,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832659527] [2022-12-14 07:02:23,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832659527] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:02:23,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365741149] [2022-12-14 07:02:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:02:23,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:02:23,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:02:23,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:02:23,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:02:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:02:23,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:02:23,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:02:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:02:23,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:02:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:02:23,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365741149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:02:23,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1746791732] [2022-12-14 07:02:23,783 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-12-14 07:02:23,783 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:02:23,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:02:23,784 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:02:23,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:03:41,371 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:03:41,654 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 07:03:41,934 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-12-14 07:03:42,523 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 241 for LOIs [2022-12-14 07:03:58,852 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 441 for LOIs [2022-12-14 07:03:59,086 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-12-14 07:03:59,130 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 447 for LOIs [2022-12-14 07:03:59,757 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:05:36,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1746791732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:05:36,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:05:36,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [6, 5, 5] total 52 [2022-12-14 07:05:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497759290] [2022-12-14 07:05:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:05:36,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 07:05:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:05:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 07:05:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2486, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 07:05:36,976 INFO L87 Difference]: Start difference. First operand 442 states and 672 transitions. Second operand has 44 states, 30 states have (on average 1.4) internal successors, (42), 28 states have internal predecessors, (42), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 07:06:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:06:08,330 INFO L93 Difference]: Finished difference Result 925 states and 1460 transitions. [2022-12-14 07:06:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-14 07:06:08,331 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.4) internal successors, (42), 28 states have internal predecessors, (42), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 83 [2022-12-14 07:06:08,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:06:08,332 INFO L225 Difference]: With dead ends: 925 [2022-12-14 07:06:08,333 INFO L226 Difference]: Without dead ends: 667 [2022-12-14 07:06:08,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 113.2s TimeCoverageRelationStatistics Valid=268, Invalid=3514, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 07:06:08,334 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 480 mSDsluCounter, 3617 mSDsCounter, 0 mSdLazyCounter, 5234 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 5312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 5234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:06:08,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 3851 Invalid, 5312 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 5234 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-12-14 07:06:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-12-14 07:06:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 541. [2022-12-14 07:06:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 415 states have (on average 1.5060240963855422) internal successors, (625), 423 states have internal predecessors, (625), 98 states have call successors, (98), 28 states have call predecessors, (98), 27 states have return successors, (98), 89 states have call predecessors, (98), 97 states have call successors, (98) [2022-12-14 07:06:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 821 transitions. [2022-12-14 07:06:08,975 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 821 transitions. Word has length 83 [2022-12-14 07:06:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:06:08,976 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 821 transitions. [2022-12-14 07:06:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.4) internal successors, (42), 28 states have internal predecessors, (42), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 07:06:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 821 transitions. [2022-12-14 07:06:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 07:06:08,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:06:08,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:06:08,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 07:06:09,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 07:06:09,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:06:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:06:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1833631120, now seen corresponding path program 1 times [2022-12-14 07:06:09,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:06:09,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039416878] [2022-12-14 07:06:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:06:09,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:06:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:06:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:06:09,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:06:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039416878] [2022-12-14 07:06:09,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039416878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:06:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700525275] [2022-12-14 07:06:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:06:09,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:06:09,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:06:09,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:06:09,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c6c8db-cd37-4a90-9ba1-6d8d72895bb8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:06:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:06:09,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:06:09,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:06:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:06:09,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:06:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:06:09,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700525275] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:06:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640854417] [2022-12-14 07:06:09,598 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 07:06:09,598 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:06:09,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:06:09,599 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:06:09,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs