./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS --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 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 --- 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-8393723 [2022-11-19 07:11:49,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:11:49,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:11:49,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:11:49,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:11:49,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:11:49,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:11:49,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:11:49,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:11:49,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:11:49,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:11:49,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:11:49,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:11:49,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:11:49,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:11:49,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:11:49,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:11:49,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:11:49,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:11:49,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:11:49,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:11:49,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:11:49,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:11:49,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:11:49,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:11:49,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:11:49,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:11:49,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:11:49,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:11:49,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:11:49,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:11:49,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:11:49,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:11:49,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:11:49,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:11:49,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:11:49,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:11:49,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:11:49,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:11:49,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:11:49,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:11:49,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:11:49,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:11:49,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:11:49,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:11:49,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:11:49,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:11:49,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:11:49,912 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:11:49,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:11:49,912 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:11:49,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:11:49,913 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:11:49,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:11:49,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:11:49,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:11:49,914 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:11:49,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:11:49,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:11:49,914 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:11:49,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:11:49,915 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:11:49,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:11:49,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:11:49,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:11:49,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:11:49,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:11:49,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:11:49,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:11:49,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:11:49,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:11:49,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:11:49,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:11:49,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:11:49,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:11:49,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:11:49,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:11:49,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:11:49,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:11:49,920 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:11:49,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:11:49,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:11:49,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:11:49,921 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_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 [2022-11-19 07:11:50,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:11:50,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:11:50,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:11:50,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:11:50,257 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:11:50,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-11-19 07:11:50,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/data/ad6fddfe1/d00bb145f06745a999f86e17d1b08e78/FLAG8f63c60cd [2022-11-19 07:11:50,954 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:11:50,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-11-19 07:11:50,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/data/ad6fddfe1/d00bb145f06745a999f86e17d1b08e78/FLAG8f63c60cd [2022-11-19 07:11:51,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/data/ad6fddfe1/d00bb145f06745a999f86e17d1b08e78 [2022-11-19 07:11:51,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:11:51,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:11:51,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:11:51,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:11:51,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:11:51,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:11:51" (1/1) ... [2022-11-19 07:11:51,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5587cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:51, skipping insertion in model container [2022-11-19 07:11:51,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:11:51" (1/1) ... [2022-11-19 07:11:51,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:11:51,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:11:51,448 WARN L234 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_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c[1542,1555] [2022-11-19 07:11:51,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:51,873 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:11:51,895 WARN L234 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_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c[1542,1555] [2022-11-19 07:11:52,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:52,054 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:11:52,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52 WrapperNode [2022-11-19 07:11:52,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:11:52,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:11:52,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:11:52,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:11:52,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,153 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 829 [2022-11-19 07:11:52,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:11:52,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:11:52,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:11:52,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:11:52,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:11:52,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:11:52,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:11:52,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:11:52,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (1/1) ... [2022-11-19 07:11:52,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:11:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:52,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:11:52,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:11:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:11:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:11:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:11:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:11:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:11:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:11:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:11:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:11:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:11:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:11:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:11:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:11:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:11:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:11:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:11:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:11:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:11:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:11:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:11:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:11:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:11:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:11:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:11:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:11:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:11:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:11:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:11:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:11:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:11:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:11:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:11:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:11:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:11:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:11:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:11:52,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:11:52,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:11:53,437 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:11:53,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:11:53,814 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:11:53,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:11:53 BoogieIcfgContainer [2022-11-19 07:11:53,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:11:53,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:11:53,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:11:53,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:11:53,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:11:51" (1/3) ... [2022-11-19 07:11:53,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d81e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:11:53, skipping insertion in model container [2022-11-19 07:11:53,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:52" (2/3) ... [2022-11-19 07:11:53,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d81e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:11:53, skipping insertion in model container [2022-11-19 07:11:53,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:11:53" (3/3) ... [2022-11-19 07:11:53,825 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product37.cil.c [2022-11-19 07:11:53,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:11:53,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:11:53,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:11:53,922 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;@2ab99642, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:11:53,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:11:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-19 07:11:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:11:53,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:53,944 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] [2022-11-19 07:11:53,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1297728867, now seen corresponding path program 1 times [2022-11-19 07:11:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:53,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600612582] [2022-11-19 07:11:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:54,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:54,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600612582] [2022-11-19 07:11:54,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600612582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:54,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:54,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:11:54,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196100774] [2022-11-19 07:11:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:54,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:11:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:11:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:11:54,419 INFO L87 Difference]: Start difference. First operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:11:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:54,582 INFO L93 Difference]: Finished difference Result 199 states and 266 transitions. [2022-11-19 07:11:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:11:54,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-19 07:11:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:54,607 INFO L225 Difference]: With dead ends: 199 [2022-11-19 07:11:54,607 INFO L226 Difference]: Without dead ends: 138 [2022-11-19 07:11:54,612 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 [2022-11-19 07:11:54,616 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:54,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-19 07:11:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-19 07:11:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 83 states have internal predecessors, (108), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-19 07:11:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2022-11-19 07:11:54,697 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 60 [2022-11-19 07:11:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:54,698 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2022-11-19 07:11:54,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:11:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2022-11-19 07:11:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:11:54,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:54,702 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] [2022-11-19 07:11:54,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:11:54,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1184471534, now seen corresponding path program 1 times [2022-11-19 07:11:54,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117361369] [2022-11-19 07:11:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:54,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117361369] [2022-11-19 07:11:54,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117361369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:54,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:54,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793760463] [2022-11-19 07:11:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:54,997 INFO L87 Difference]: Start difference. First operand 138 states and 187 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:11:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:55,119 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2022-11-19 07:11:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:55,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-19 07:11:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:55,125 INFO L225 Difference]: With dead ends: 195 [2022-11-19 07:11:55,126 INFO L226 Difference]: Without dead ends: 140 [2022-11-19 07:11:55,128 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 [2022-11-19 07:11:55,130 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:55,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-19 07:11:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-19 07:11:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 85 states have internal predecessors, (110), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-19 07:11:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 189 transitions. [2022-11-19 07:11:55,155 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 189 transitions. Word has length 61 [2022-11-19 07:11:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:55,157 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 189 transitions. [2022-11-19 07:11:55,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:11:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 189 transitions. [2022-11-19 07:11:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:11:55,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:55,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:55,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:11:55,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:55,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1952706249, now seen corresponding path program 1 times [2022-11-19 07:11:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169926199] [2022-11-19 07:11:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:55,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:55,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169926199] [2022-11-19 07:11:55,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169926199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:55,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:55,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:55,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544267384] [2022-11-19 07:11:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:55,371 INFO L87 Difference]: Start difference. First operand 140 states and 189 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:11:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:55,533 INFO L93 Difference]: Finished difference Result 310 states and 437 transitions. [2022-11-19 07:11:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-19 07:11:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:55,536 INFO L225 Difference]: With dead ends: 310 [2022-11-19 07:11:55,536 INFO L226 Difference]: Without dead ends: 188 [2022-11-19 07:11:55,542 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 [2022-11-19 07:11:55,548 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 57 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:55,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 337 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-19 07:11:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2022-11-19 07:11:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 117 states have internal predecessors, (163), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 07:11:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2022-11-19 07:11:55,572 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 66 [2022-11-19 07:11:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:55,573 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2022-11-19 07:11:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:11:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2022-11-19 07:11:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:11:55,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:55,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:55,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:11:55,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:55,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1610137364, now seen corresponding path program 1 times [2022-11-19 07:11:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:55,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955715836] [2022-11-19 07:11:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:55,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955715836] [2022-11-19 07:11:55,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955715836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:11:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732611546] [2022-11-19 07:11:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:55,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:11:55,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:11:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:56,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:11:56,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:56,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:11:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:56,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732611546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:11:56,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [8496406] [2022-11-19 07:11:56,313 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-19 07:11:56,314 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:11:56,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:11:56,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:11:56,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:12:35,140 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:12:35,621 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:12:35,933 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:13:13,042 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:20,920 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:27,746 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:42,543 WARN L233 SmtUtils]: Spent 14.50s on a formula simplification. DAG size of input: 588 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:56,770 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 572 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:01,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [8496406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:01,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:14:01,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 07:14:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807584534] [2022-11-19 07:14:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:14:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:14:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:14:01,734 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-19 07:14:22,270 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 513 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:29,168 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 500 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:35,740 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 510 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:41,854 INFO L93 Difference]: Finished difference Result 449 states and 696 transitions. [2022-11-19 07:14:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:14:41,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 67 [2022-11-19 07:14:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:41,861 INFO L225 Difference]: With dead ends: 449 [2022-11-19 07:14:41,861 INFO L226 Difference]: Without dead ends: 284 [2022-11-19 07:14:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 117.6s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-11-19 07:14:41,863 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 282 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2428 Invalid, 1828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-19 07:14:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-19 07:14:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 211. [2022-11-19 07:14:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 144 states have internal predecessors, (202), 51 states have call successors, (51), 16 states have call predecessors, (51), 16 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 07:14:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2022-11-19 07:14:42,017 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 67 [2022-11-19 07:14:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:42,017 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2022-11-19 07:14:42,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-19 07:14:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2022-11-19 07:14:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:14:42,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:42,020 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:42,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:42,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:42,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1088883107, now seen corresponding path program 1 times [2022-11-19 07:14:42,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:42,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129411932] [2022-11-19 07:14:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:42,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:14:42,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129411932] [2022-11-19 07:14:42,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129411932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:14:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702795922] [2022-11-19 07:14:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:42,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:42,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:14:42,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:14:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:42,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:14:42,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:14:42,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:14:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:14:42,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702795922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:14:42,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [388001668] [2022-11-19 07:14:42,839 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-19 07:14:42,840 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:14:42,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:14:42,841 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:14:42,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:15:29,916 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:15:30,227 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:15:30,535 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:15:58,547 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:12,905 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:20,680 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:27,509 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:40,099 WARN L233 SmtUtils]: Spent 12.29s on a formula simplification. DAG size of input: 583 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:11,949 WARN L233 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 584 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:11,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [388001668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:11,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:17:11,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:17:11,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470997295] [2022-11-19 07:17:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:11,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:17:11,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:17:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:17:11,957 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-19 07:17:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:49,820 INFO L93 Difference]: Finished difference Result 492 states and 754 transitions. [2022-11-19 07:17:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:17:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 73 [2022-11-19 07:17:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:49,824 INFO L225 Difference]: With dead ends: 492 [2022-11-19 07:17:49,824 INFO L226 Difference]: Without dead ends: 327 [2022-11-19 07:17:49,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 129.8s TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 07:17:49,826 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 243 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:49,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 2503 Invalid, 2121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-19 07:17:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-19 07:17:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 254. [2022-11-19 07:17:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.46448087431694) internal successors, (268), 185 states have internal predecessors, (268), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-19 07:17:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2022-11-19 07:17:50,001 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 73 [2022-11-19 07:17:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:50,001 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2022-11-19 07:17:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-19 07:17:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2022-11-19 07:17:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 07:17:50,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:50,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:50,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:50,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:50,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash -650245508, now seen corresponding path program 1 times [2022-11-19 07:17:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:50,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990565538] [2022-11-19 07:17:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:17:50,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:50,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990565538] [2022-11-19 07:17:50,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990565538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:50,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62389171] [2022-11-19 07:17:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:50,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:50,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:50,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:17:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:17:50,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:17:50,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:17:50,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62389171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292261146] [2022-11-19 07:17:50,834 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-19 07:17:50,836 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:50,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:50,837 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:50,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:18:50,141 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:18:50,435 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-19 07:18:50,497 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 450 for LOIs [2022-11-19 07:18:50,826 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:18:51,153 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-19 07:18:51,218 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:19:30,505 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:38,233 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:45,014 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:55,949 WARN L233 SmtUtils]: Spent 10.58s on a formula simplification. DAG size of input: 636 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:06,888 WARN L233 SmtUtils]: Spent 10.58s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:28,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [292261146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:28,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:20:28,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-19 07:20:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329459493] [2022-11-19 07:20:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:28,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-19 07:20:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-19 07:20:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:20:28,655 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand has 29 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-19 07:20:48,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:48,550 INFO L93 Difference]: Finished difference Result 562 states and 873 transitions. [2022-11-19 07:20:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:20:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 76 [2022-11-19 07:20:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:48,554 INFO L225 Difference]: With dead ends: 562 [2022-11-19 07:20:48,555 INFO L226 Difference]: Without dead ends: 397 [2022-11-19 07:20:48,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 103.8s TimeCoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 07:20:48,557 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 143 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:48,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 3085 Invalid, 3024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-11-19 07:20:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-19 07:20:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 350. [2022-11-19 07:20:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 272 states have (on average 1.5183823529411764) internal successors, (413), 275 states have internal predecessors, (413), 57 states have call successors, (57), 20 states have call predecessors, (57), 20 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-19 07:20:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 526 transitions. [2022-11-19 07:20:48,890 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 526 transitions. Word has length 76 [2022-11-19 07:20:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:48,891 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 526 transitions. [2022-11-19 07:20:48,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-19 07:20:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 526 transitions. [2022-11-19 07:20:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 07:20:48,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:48,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:48,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:49,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:49,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash 717072759, now seen corresponding path program 1 times [2022-11-19 07:20:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:49,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100019889] [2022-11-19 07:20:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:20:49,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100019889] [2022-11-19 07:20:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100019889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:20:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281818864] [2022-11-19 07:20:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:49,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:49,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:49,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7caa-33a0-48f1-8655-dcc4f47e5700/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:20:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:49,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:20:49,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:20:49,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:20:49,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281818864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:49,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159576671] [2022-11-19 07:20:49,640 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-19 07:20:49,641 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:20:49,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:20:49,642 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:20:49,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:21:39,653 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:21:39,943 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:21:40,236 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 457 for LOIs [2022-11-19 07:22:04,228 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 455 for LOIs [2022-11-19 07:22:20,693 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 240 for LOIs [2022-11-19 07:22:20,725 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2022-11-19 07:22:20,764 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2022-11-19 07:22:21,472 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-19 07:22:22,218 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:22:39,858 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:02,551 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:10,453 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:17,393 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:38,844 WARN L233 SmtUtils]: Spent 21.12s on a formula simplification. DAG size of input: 603 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:00,280 WARN L233 SmtUtils]: Spent 21.07s on a formula simplification. DAG size of input: 605 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:11,678 WARN L233 SmtUtils]: Spent 11.02s on a formula simplification. DAG size of input: 604 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:22,795 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 579 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:29,722 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 577 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:50,192 WARN L233 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 575 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:25:00,010 WARN L233 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 573 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:25:08,577 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 596 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)