./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9 --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 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- 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-6b4ec56 [2022-11-20 20:28:25,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:28:25,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:28:25,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:28:25,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:28:25,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:28:25,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:28:25,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:28:25,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:28:25,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:28:25,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:28:25,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:28:25,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:28:25,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:28:26,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:28:26,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:28:26,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:28:26,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:28:26,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:28:26,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:28:26,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:28:26,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:28:26,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:28:26,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:28:26,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:28:26,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:28:26,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:28:26,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:28:26,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:28:26,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:28:26,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:28:26,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:28:26,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:28:26,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:28:26,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:28:26,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:28:26,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:28:26,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:28:26,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:28:26,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:28:26,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:28:26,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:28:26,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:28:26,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:28:26,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:28:26,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:28:26,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:28:26,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:28:26,108 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:28:26,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:28:26,108 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:28:26,108 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:28:26,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:28:26,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:28:26,110 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:28:26,110 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:28:26,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:28:26,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:28:26,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:28:26,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:28:26,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:28:26,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:28:26,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:28:26,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:28:26,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:28:26,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:28:26,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:28:26,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:28:26,114 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:28:26,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:28:26,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:28:26,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:28:26,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:28:26,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:28:26,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:28:26,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:28:26,117 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:28:26,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:28:26,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:28:26,118 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:28:26,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:28:26,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:28:26,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:28:26,119 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_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2022-11-20 20:28:26,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:28:26,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:28:26,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:28:26,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:28:26,447 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:28:26,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-11-20 20:28:29,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:28:29,934 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:28:29,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-11-20 20:28:29,970 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/data/783abaad9/fe7af0f099e3477a898a8b440b9a2758/FLAGf104623c5 [2022-11-20 20:28:29,985 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/data/783abaad9/fe7af0f099e3477a898a8b440b9a2758 [2022-11-20 20:28:29,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:28:29,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:28:29,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:28:29,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:28:29,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:28:29,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:28:29" (1/1) ... [2022-11-20 20:28:29,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4f8140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:29, skipping insertion in model container [2022-11-20 20:28:29,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:28:29" (1/1) ... [2022-11-20 20:28:30,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:28:30,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:28:30,605 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-11-20 20:28:30,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:28:30,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:28:30,769 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-11-20 20:28:30,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:28:30,844 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:28:30,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30 WrapperNode [2022-11-20 20:28:30,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:28:30,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:28:30,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:28:30,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:28:30,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:30,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:30,952 INFO L138 Inliner]: procedures = 128, calls = 209, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 861 [2022-11-20 20:28:30,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:28:30,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:28:30,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:28:30,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:28:30,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:30,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:30,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:30,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:31,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:31,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:31,035 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:31,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:31,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:28:31,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:28:31,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:28:31,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:28:31,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (1/1) ... [2022-11-20 20:28:31,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:28:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:31,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:28:31,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:28:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:28:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:28:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:28:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:28:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:28:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:28:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:28:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:28:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:28:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:28:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:28:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:28:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:28:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:28:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:28:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:28:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:28:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:28:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:28:31,184 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:28:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:28:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:28:31,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:28:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:28:31,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:28:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:28:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:28:31,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:28:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:28:31,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:28:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:28:31,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:28:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:28:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:28:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:28:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:28:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-20 20:28:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-20 20:28:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:28:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:28:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:28:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:28:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:28:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:28:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:28:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:28:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:28:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:28:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:28:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:28:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:28:31,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:28:31,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:28:32,378 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:28:32,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:28:32,816 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:28:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:28:32 BoogieIcfgContainer [2022-11-20 20:28:32,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:28:32,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:28:32,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:28:32,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:28:32,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:28:29" (1/3) ... [2022-11-20 20:28:32,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4423d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:28:32, skipping insertion in model container [2022-11-20 20:28:32,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:30" (2/3) ... [2022-11-20 20:28:32,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4423d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:28:32, skipping insertion in model container [2022-11-20 20:28:32,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:28:32" (3/3) ... [2022-11-20 20:28:32,828 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2022-11-20 20:28:32,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:28:32,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:28:32,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:28:32,911 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;@5edfaa43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:28:32,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:28:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-20 20:28:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 20:28:32,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:32,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:32,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash -988609598, now seen corresponding path program 1 times [2022-11-20 20:28:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:32,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11197123] [2022-11-20 20:28:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:28:33,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:33,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11197123] [2022-11-20 20:28:33,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11197123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:28:33,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:28:33,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:28:33,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723759792] [2022-11-20 20:28:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:28:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:33,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:28:33,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:28:33,480 INFO L87 Difference]: Start difference. First operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:28:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:33,630 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2022-11-20 20:28:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:28:33,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 89 [2022-11-20 20:28:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:33,655 INFO L225 Difference]: With dead ends: 285 [2022-11-20 20:28:33,655 INFO L226 Difference]: Without dead ends: 181 [2022-11-20 20:28:33,660 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 [2022-11-20 20:28:33,667 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:33,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:28:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-20 20:28:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-20 20:28:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 20:28:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 239 transitions. [2022-11-20 20:28:33,741 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 239 transitions. Word has length 89 [2022-11-20 20:28:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:33,743 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 239 transitions. [2022-11-20 20:28:33,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:28:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 239 transitions. [2022-11-20 20:28:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 20:28:33,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:33,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:33,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:28:33,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1945105561, now seen corresponding path program 1 times [2022-11-20 20:28:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:33,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921204505] [2022-11-20 20:28:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:33,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:28:34,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921204505] [2022-11-20 20:28:34,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921204505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:28:34,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:28:34,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:28:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683061736] [2022-11-20 20:28:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:28:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:28:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:28:34,055 INFO L87 Difference]: Start difference. First operand 181 states and 239 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:28:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:34,237 INFO L93 Difference]: Finished difference Result 281 states and 358 transitions. [2022-11-20 20:28:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:28:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 90 [2022-11-20 20:28:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:34,240 INFO L225 Difference]: With dead ends: 281 [2022-11-20 20:28:34,242 INFO L226 Difference]: Without dead ends: 183 [2022-11-20 20:28:34,244 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 [2022-11-20 20:28:34,246 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:34,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:28:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-20 20:28:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-20 20:28:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 111 states have internal predecessors, (140), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 20:28:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2022-11-20 20:28:34,278 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 90 [2022-11-20 20:28:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:34,278 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2022-11-20 20:28:34,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:28:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2022-11-20 20:28:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 20:28:34,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:34,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:34,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:28:34,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1064711004, now seen corresponding path program 1 times [2022-11-20 20:28:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:34,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295628074] [2022-11-20 20:28:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:28:34,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295628074] [2022-11-20 20:28:34,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295628074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:28:34,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:28:34,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:28:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411434177] [2022-11-20 20:28:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:34,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:28:34,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:34,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:28:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:28:34,566 INFO L87 Difference]: Start difference. First operand 183 states and 241 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:28:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:34,726 INFO L93 Difference]: Finished difference Result 396 states and 541 transitions. [2022-11-20 20:28:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:28:34,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-11-20 20:28:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:34,729 INFO L225 Difference]: With dead ends: 396 [2022-11-20 20:28:34,730 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 20:28:34,731 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 [2022-11-20 20:28:34,732 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 57 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:34,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 431 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:28:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 20:28:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-11-20 20:28:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 143 states have internal predecessors, (193), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 20:28:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 316 transitions. [2022-11-20 20:28:34,762 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 316 transitions. Word has length 95 [2022-11-20 20:28:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:34,763 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 316 transitions. [2022-11-20 20:28:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:28:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 316 transitions. [2022-11-20 20:28:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 20:28:34,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:34,767 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:34,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:28:34,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:34,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1276490101, now seen corresponding path program 1 times [2022-11-20 20:28:34,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:34,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9357614] [2022-11-20 20:28:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:28:35,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:35,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9357614] [2022-11-20 20:28:35,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9357614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:28:35,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543309394] [2022-11-20 20:28:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:35,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:35,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:28:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:35,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:28:35,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:28:35,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:28:35,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543309394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:28:35,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602606435] [2022-11-20 20:28:35,696 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-11-20 20:28:35,700 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:28:35,709 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:28:35,716 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:28:35,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:29:14,391 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:29:14,734 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-20 20:29:29,521 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:29:29,833 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-20 20:30:11,038 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-20 20:30:11,779 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-20 20:30:11,832 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-11-20 20:30:12,120 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-20 20:30:12,197 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-20 20:30:12,240 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-20 20:30:12,995 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 247 for LOIs [2022-11-20 20:30:13,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:30:26,560 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:32,111 WARN L233 SmtUtils]: Spent 5.45s 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) [2022-11-20 20:31:11,875 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 566 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:17,712 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 568 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:23,801 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:29,963 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:35,926 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 571 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:42,265 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:04,724 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 530 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:11,982 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 569 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:10,558 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 581 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:19,414 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 589 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:42,630 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 443 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:03,248 WARN L233 SmtUtils]: Spent 14.92s on a formula simplification. DAG size of input: 640 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:13,349 WARN L233 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 637 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:37,132 WARN L233 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 673 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:40,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1602606435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:34:40,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:34:40,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [4, 4, 4] total 69 [2022-11-20 20:34:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697722237] [2022-11-20 20:34:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:34:40,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-20 20:34:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:34:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-20 20:34:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4452, Unknown=0, NotChecked=0, Total=4692 [2022-11-20 20:34:40,734 INFO L87 Difference]: Start difference. First operand 226 states and 316 transitions. Second operand has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-20 20:35:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:43,716 INFO L93 Difference]: Finished difference Result 643 states and 949 transitions. [2022-11-20 20:35:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-20 20:35:43,718 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 96 [2022-11-20 20:35:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:43,722 INFO L225 Difference]: With dead ends: 643 [2022-11-20 20:35:43,722 INFO L226 Difference]: Without dead ends: 435 [2022-11-20 20:35:43,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 291.0s TimeCoverageRelationStatistics Valid=303, Invalid=5703, Unknown=0, NotChecked=0, Total=6006 [2022-11-20 20:35:43,727 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 298 mSDsluCounter, 7132 mSDsCounter, 0 mSdLazyCounter, 9465 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 7412 SdHoareTripleChecker+Invalid, 9511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 9465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:43,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 7412 Invalid, 9511 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [46 Valid, 9465 Invalid, 0 Unknown, 0 Unchecked, 38.6s Time] [2022-11-20 20:35:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-20 20:35:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 352. [2022-11-20 20:35:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 235 states have (on average 1.4085106382978723) internal successors, (331), 239 states have internal predecessors, (331), 84 states have call successors, (84), 33 states have call predecessors, (84), 32 states have return successors, (84), 81 states have call predecessors, (84), 83 states have call successors, (84) [2022-11-20 20:35:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 499 transitions. [2022-11-20 20:35:43,925 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 499 transitions. Word has length 96 [2022-11-20 20:35:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:43,926 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 499 transitions. [2022-11-20 20:35:43,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-20 20:35:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 499 transitions. [2022-11-20 20:35:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 20:35:43,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:43,931 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:43,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:35:44,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:44,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:35:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2145474438, now seen corresponding path program 1 times [2022-11-20 20:35:44,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248372971] [2022-11-20 20:35:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 20:35:44,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:44,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248372971] [2022-11-20 20:35:44,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248372971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:44,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:44,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:35:44,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117850072] [2022-11-20 20:35:44,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:44,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:35:44,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:35:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:35:44,267 INFO L87 Difference]: Start difference. First operand 352 states and 499 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:35:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:44,742 INFO L93 Difference]: Finished difference Result 818 states and 1204 transitions. [2022-11-20 20:35:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:35:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2022-11-20 20:35:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:44,749 INFO L225 Difference]: With dead ends: 818 [2022-11-20 20:35:44,749 INFO L226 Difference]: Without dead ends: 492 [2022-11-20 20:35:44,750 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 [2022-11-20 20:35:44,754 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 55 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:44,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 442 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-20 20:35:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 485. [2022-11-20 20:35:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 343 states have (on average 1.4810495626822158) internal successors, (508), 347 states have internal predecessors, (508), 109 states have call successors, (109), 33 states have call predecessors, (109), 32 states have return successors, (109), 106 states have call predecessors, (109), 108 states have call successors, (109) [2022-11-20 20:35:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 726 transitions. [2022-11-20 20:35:45,166 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 726 transitions. Word has length 101 [2022-11-20 20:35:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:45,167 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 726 transitions. [2022-11-20 20:35:45,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:35:45,168 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 726 transitions. [2022-11-20 20:35:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 20:35:45,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:45,173 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:45,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:35:45,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:35:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash 975923164, now seen corresponding path program 1 times [2022-11-20 20:35:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:45,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635738093] [2022-11-20 20:35:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:45,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:35:45,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:45,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635738093] [2022-11-20 20:35:45,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635738093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:45,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822040428] [2022-11-20 20:35:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:45,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:45,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:45,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b23bc5-f372-498a-9abe-3027237ea61c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:35:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:45,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:35:45,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:35:45,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:35:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:35:45,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822040428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:35:45,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [363829643] [2022-11-20 20:35:45,890 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-20 20:35:45,891 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:35:45,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:35:45,892 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:35:45,892 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:36:20,642 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:36:20,975 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-20 20:36:35,057 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:36:35,351 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-20 20:37:43,261 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-20 20:37:43,961 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-20 20:37:44,002 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-11-20 20:37:44,294 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-20 20:37:44,360 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-20 20:37:44,399 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-20 20:37:45,118 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 439 for LOIs [2022-11-20 20:37:45,382 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-11-20 20:37:45,422 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:37:58,279 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:03,694 WARN L233 SmtUtils]: Spent 5.32s 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) [2022-11-20 20:38:41,646 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 566 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:47,409 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 568 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:53,243 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:59,024 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:04,942 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 571 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:10,808 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:32,116 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 530 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:37,779 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 566 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:40:35,617 WARN L233 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 581 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:40:44,450 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 589 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:07,407 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 443 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:28,041 WARN L233 SmtUtils]: Spent 14.92s on a formula simplification. DAG size of input: 640 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:38,066 WARN L233 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 637 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:57,870 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification. DAG size of input: 643 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)