./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI --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 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 --- 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-5e519f3 [2022-11-03 01:44:53,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:44:53,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:44:53,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:44:53,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:44:53,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:44:53,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:44:53,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:44:53,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:44:53,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:44:53,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:44:53,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:44:53,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:44:53,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:44:53,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:44:53,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:44:53,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:44:53,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:44:53,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:44:53,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:44:53,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:44:53,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:44:53,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:44:53,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:44:53,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:44:53,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:44:53,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:44:53,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:44:53,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:44:53,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:44:53,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:44:53,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:44:53,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:44:53,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:44:53,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:44:53,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:44:53,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:44:53,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:44:53,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:44:53,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:44:53,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:44:53,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:44:53,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:44:53,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:44:53,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:44:53,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:44:53,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:44:53,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:44:53,610 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:44:53,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:44:53,610 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:44:53,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:44:53,612 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:44:53,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:44:53,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:44:53,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:44:53,613 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:44:53,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:44:53,613 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:44:53,613 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:44:53,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:44:53,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:44:53,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:44:53,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:44:53,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:44:53,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:44:53,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:44:53,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:44:53,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:44:53,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:44:53,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:44:53,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:44:53,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:44:53,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:44:53,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:44:53,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:44:53,627 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:44:53,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:44:53,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:44:53,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:44:53,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:44:53,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:44:53,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:44:53,631 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_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 [2022-11-03 01:44:53,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:44:54,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:44:54,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:44:54,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:44:54,007 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:44:54,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2022-11-03 01:44:54,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/data/58868079b/f2cfb0e09f2049d486b5c456bae7291f/FLAGeb5a89e36 [2022-11-03 01:44:54,770 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:44:54,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2022-11-03 01:44:54,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/data/58868079b/f2cfb0e09f2049d486b5c456bae7291f/FLAGeb5a89e36 [2022-11-03 01:44:55,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/data/58868079b/f2cfb0e09f2049d486b5c456bae7291f [2022-11-03 01:44:55,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:44:55,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:44:55,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:44:55,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:44:55,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:44:55,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:44:55" (1/1) ... [2022-11-03 01:44:55,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2d2049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:55, skipping insertion in model container [2022-11-03 01:44:55,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:44:55" (1/1) ... [2022-11-03 01:44:55,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:44:55,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:44:55,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2022-11-03 01:44:55,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:44:55,860 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:44:55,916 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2022-11-03 01:44:56,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:44:56,117 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:44:56,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56 WrapperNode [2022-11-03 01:44:56,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:44:56,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:44:56,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:44:56,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:44:56,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,247 INFO L138 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1084 [2022-11-03 01:44:56,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:44:56,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:44:56,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:44:56,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:44:56,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:44:56,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:44:56,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:44:56,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:44:56,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (1/1) ... [2022-11-03 01:44:56,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:44:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:56,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:44:56,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:44:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 01:44:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 01:44:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:44:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:44:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:44:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:44:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:44:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:44:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:44:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:44:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:44:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:44:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:44:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:44:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:44:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:44:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 01:44:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 01:44:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:44:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:44:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:44:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:44:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:44:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 01:44:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 01:44:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:44:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:44:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:44:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 01:44:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 01:44:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 01:44:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 01:44:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:44:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:44:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:44:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:44:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:44:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:44:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 01:44:56,443 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 01:44:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:44:56,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:44:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:44:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:44:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:44:56,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:44:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:44:56,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:44:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:44:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:44:56,447 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:44:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:44:56,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:44:56,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:44:56,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:44:57,825 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:44:58,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:44:58,416 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:44:58,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:58 BoogieIcfgContainer [2022-11-03 01:44:58,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:44:58,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:44:58,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:44:58,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:44:58,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:44:55" (1/3) ... [2022-11-03 01:44:58,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca1e758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:58, skipping insertion in model container [2022-11-03 01:44:58,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:56" (2/3) ... [2022-11-03 01:44:58,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca1e758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:58, skipping insertion in model container [2022-11-03 01:44:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:58" (3/3) ... [2022-11-03 01:44:58,429 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2022-11-03 01:44:58,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:44:58,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:44:58,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:44:58,522 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;@490e24d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:44:58,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:44:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 01:44:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 01:44:58,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:58,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:58,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1185764651, now seen corresponding path program 1 times [2022-11-03 01:44:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7021724] [2022-11-03 01:44:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:44:58,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:58,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7021724] [2022-11-03 01:44:58,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7021724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:58,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:58,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:44:58,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859200806] [2022-11-03 01:44:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:58,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:44:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:44:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:44:58,975 INFO L87 Difference]: Start difference. First operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:44:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:59,204 INFO L93 Difference]: Finished difference Result 341 states and 452 transitions. [2022-11-03 01:44:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:44:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-11-03 01:44:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:59,219 INFO L225 Difference]: With dead ends: 341 [2022-11-03 01:44:59,219 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 01:44:59,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:44:59,227 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:59,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 01:44:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-03 01:44:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 124 states have internal predecessors, (155), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-03 01:44:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2022-11-03 01:44:59,288 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 64 [2022-11-03 01:44:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:59,290 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2022-11-03 01:44:59,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:44:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2022-11-03 01:44:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:44:59,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:59,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:59,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:44:59,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash -789631117, now seen corresponding path program 1 times [2022-11-03 01:44:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:59,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019530217] [2022-11-03 01:44:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:44:59,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:59,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019530217] [2022-11-03 01:44:59,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019530217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:59,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:59,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138959283] [2022-11-03 01:44:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:59,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:59,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:59,721 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:44:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:59,917 INFO L93 Difference]: Finished difference Result 337 states and 440 transitions. [2022-11-03 01:44:59,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:59,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-03 01:44:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:59,927 INFO L225 Difference]: With dead ends: 337 [2022-11-03 01:44:59,927 INFO L226 Difference]: Without dead ends: 211 [2022-11-03 01:44:59,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:59,929 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:59,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:44:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-03 01:44:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-03 01:44:59,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 126 states have internal predecessors, (157), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-03 01:44:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2022-11-03 01:44:59,959 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 65 [2022-11-03 01:44:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:59,959 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2022-11-03 01:44:59,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:44:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2022-11-03 01:44:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 01:44:59,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:59,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:59,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:44:59,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:59,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2054379677, now seen corresponding path program 1 times [2022-11-03 01:44:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:59,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126893679] [2022-11-03 01:44:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:45:00,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:00,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126893679] [2022-11-03 01:45:00,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126893679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:00,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:00,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873061764] [2022-11-03 01:45:00,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:00,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:00,225 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:45:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:00,364 INFO L93 Difference]: Finished difference Result 452 states and 623 transitions. [2022-11-03 01:45:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-03 01:45:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:00,368 INFO L225 Difference]: With dead ends: 452 [2022-11-03 01:45:00,368 INFO L226 Difference]: Without dead ends: 259 [2022-11-03 01:45:00,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:00,372 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 57 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:00,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 492 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-03 01:45:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2022-11-03 01:45:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 155 states have (on average 1.3548387096774193) internal successors, (210), 158 states have internal predecessors, (210), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 01:45:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2022-11-03 01:45:00,421 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 70 [2022-11-03 01:45:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:00,423 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2022-11-03 01:45:00,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:45:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2022-11-03 01:45:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 01:45:00,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:00,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:45:00,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 998407012, now seen corresponding path program 1 times [2022-11-03 01:45:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:00,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170937493] [2022-11-03 01:45:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:45:00,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:00,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170937493] [2022-11-03 01:45:00,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170937493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29359134] [2022-11-03 01:45:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:00,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:00,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:00,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:45:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:01,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:45:01,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:45:01,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:45:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:45:01,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29359134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:45:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537721868] [2022-11-03 01:45:01,331 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 01:45:01,331 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:45:01,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:45:01,340 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:45:01,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:45:38,835 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:45:39,355 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 01:45:39,821 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 271 for LOIs [2022-11-03 01:45:41,961 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-03 01:45:42,014 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 273 for LOIs [2022-11-03 01:46:04,276 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 231 for LOIs [2022-11-03 01:46:04,318 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-03 01:46:04,399 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-11-03 01:46:04,445 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 01:46:10,002 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:46:24,566 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:31,037 WARN L234 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:38,740 WARN L234 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:46,015 WARN L234 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:57,093 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 480 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:09,418 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 502 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:16,288 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 512 DAG size of output: 300 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:41,580 WARN L234 SmtUtils]: Spent 23.76s on a formula simplification. DAG size of input: 594 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:07,511 WARN L234 SmtUtils]: Spent 24.23s on a formula simplification. DAG size of input: 596 DAG size of output: 468 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:33,103 WARN L234 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:42,768 WARN L234 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 499 DAG size of output: 289 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:24,416 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 539 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:31,048 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 541 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:39,237 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 583 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:43,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [537721868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:43,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:49:43,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-11-03 01:49:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807554124] [2022-11-03 01:49:43,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:43,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-03 01:49:43,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:43,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-03 01:49:43,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2624, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 01:49:43,792 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 01:49:56,515 WARN L234 SmtUtils]: Spent 9.45s on a formula simplification. DAG size of input: 561 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:06,681 WARN L234 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 563 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:17,283 WARN L234 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 595 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:27,971 WARN L234 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 593 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:38,708 WARN L234 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 595 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:49,016 WARN L234 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 588 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:03,221 WARN L234 SmtUtils]: Spent 12.78s on a formula simplification. DAG size of input: 595 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:13,358 WARN L234 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 590 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:56,772 INFO L93 Difference]: Finished difference Result 653 states and 982 transitions. [2022-11-03 01:51:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-03 01:51:56,773 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2022-11-03 01:51:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:56,776 INFO L225 Difference]: With dead ends: 653 [2022-11-03 01:51:56,777 INFO L226 Difference]: Without dead ends: 417 [2022-11-03 01:51:56,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 316.6s TimeCoverageRelationStatistics Valid=229, Invalid=4061, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 01:51:56,781 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 248 mSDsluCounter, 6910 mSDsCounter, 0 mSdLazyCounter, 6604 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 6984 SdHoareTripleChecker+Invalid, 6643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:56,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 6984 Invalid, 6643 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [39 Valid, 6604 Invalid, 0 Unknown, 0 Unchecked, 29.3s Time] [2022-11-03 01:51:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-03 01:51:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2022-11-03 01:51:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 240 states have (on average 1.4125) internal successors, (339), 243 states have internal predecessors, (339), 82 states have call successors, (82), 32 states have call predecessors, (82), 30 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2022-11-03 01:51:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 502 transitions. [2022-11-03 01:51:56,995 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 502 transitions. Word has length 71 [2022-11-03 01:51:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:56,996 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 502 transitions. [2022-11-03 01:51:56,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 01:51:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 502 transitions. [2022-11-03 01:51:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 01:51:56,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:56,999 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:57,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:51:57,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:57,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:57,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1192123605, now seen corresponding path program 1 times [2022-11-03 01:51:57,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:57,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557797161] [2022-11-03 01:51:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:57,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:51:57,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:57,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557797161] [2022-11-03 01:51:57,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557797161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:57,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307197697] [2022-11-03 01:51:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:57,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:57,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:57,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:57,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:51:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:57,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:57,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:51:57,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:51:57,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307197697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:57,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1346974595] [2022-11-03 01:51:57,842 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 01:51:57,848 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:57,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:57,849 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:57,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:38,044 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:52:38,356 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-03 01:52:38,673 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:52,514 WARN L234 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:52:58,762 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:05,313 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:11,551 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:22,107 WARN L234 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 480 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:33,783 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 502 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:40,331 WARN L234 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 512 DAG size of output: 300 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:04,875 WARN L234 SmtUtils]: Spent 23.32s on a formula simplification. DAG size of input: 589 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:30,233 WARN L234 SmtUtils]: Spent 23.71s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:41,554 WARN L234 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 572 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:52,624 WARN L234 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 568 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:55:02,070 WARN L234 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 570 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:55:11,439 WARN L234 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 566 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:55:15,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1346974595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:15,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:55:15,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 01:55:15,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614117197] [2022-11-03 01:55:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:15,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 01:55:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 01:55:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:55:15,753 INFO L87 Difference]: Start difference. First operand 353 states and 502 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 01:55:37,105 WARN L234 SmtUtils]: Spent 19.61s on a formula simplification. DAG size of input: 554 DAG size of output: 454 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:55:57,015 WARN L234 SmtUtils]: Spent 19.57s on a formula simplification. DAG size of input: 554 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:12,204 WARN L234 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 355 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:18,483 WARN L234 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 351 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:29,024 WARN L234 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 588 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:39,444 WARN L234 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 590 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:50,894 INFO L93 Difference]: Finished difference Result 673 states and 992 transitions. [2022-11-03 01:56:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 01:56:50,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2022-11-03 01:56:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:50,913 INFO L225 Difference]: With dead ends: 673 [2022-11-03 01:56:50,913 INFO L226 Difference]: Without dead ends: 437 [2022-11-03 01:56:50,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 238.0s TimeCoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 01:56:50,922 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 237 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 2572 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:50,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 4216 Invalid, 2591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2572 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-03 01:56:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-03 01:56:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2022-11-03 01:56:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 250 states have (on average 1.412) internal successors, (353), 254 states have internal predecessors, (353), 84 states have call successors, (84), 33 states have call predecessors, (84), 31 states have return successors, (83), 80 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-03 01:56:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 520 transitions. [2022-11-03 01:56:51,171 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 520 transitions. Word has length 77 [2022-11-03 01:56:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:51,172 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 520 transitions. [2022-11-03 01:56:51,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 01:56:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 520 transitions. [2022-11-03 01:56:51,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:56:51,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:51,174 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:51,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:51,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:51,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash -39431252, now seen corresponding path program 1 times [2022-11-03 01:56:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:51,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365683852] [2022-11-03 01:56:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:51,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:56:51,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365683852] [2022-11-03 01:56:51,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365683852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707483158] [2022-11-03 01:56:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:51,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:51,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:51,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec485c0-de07-42db-bb07-1ce3f8d152b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:56:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:51,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:51,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:56:51,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:56:52,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707483158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [411446544] [2022-11-03 01:56:52,023 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 01:56:52,024 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:56:52,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:56:52,024 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:56:52,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs