./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:08:39,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:08:39,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:08:39,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:08:39,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:08:39,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:08:39,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:08:39,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:08:39,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:08:39,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:08:39,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:08:39,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:08:39,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:08:39,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:08:39,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:08:39,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:08:39,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:08:39,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:08:39,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:08:39,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:08:39,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:08:39,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:08:39,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:08:39,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:08:39,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:08:39,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:08:39,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:08:39,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:08:39,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:08:39,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:08:39,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:08:39,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:08:39,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:08:39,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:08:39,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:08:39,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:08:39,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:08:39,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:08:39,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:08:39,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:08:39,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:08:39,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:08:39,912 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:08:39,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:08:39,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:08:39,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:08:39,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:08:39,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:08:39,916 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:08:39,916 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:08:39,916 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:08:39,917 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:08:39,918 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:08:39,918 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:08:39,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:08:39,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:08:39,919 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:08:39,920 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:08:39,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:08:39,920 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:08:39,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:08:39,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:08:39,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:08:39,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:08:39,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:08:39,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:08:39,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:08:39,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:08:39,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:08:39,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:08:39,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:08:39,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:08:39,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:08:39,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:08:39,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:39,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:08:39,926 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:08:39,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:08:39,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:08:39,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:08:39,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:08:39,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:08:39,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:08:39,928 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_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf [2022-11-03 04:08:40,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:08:40,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:08:40,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:08:40,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:08:40,337 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:08:40,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-11-03 04:08:40,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/data/6a997a009/1ee8da9ebab84295b307e1dc4e1f0ccf/FLAGd3ffc4fde [2022-11-03 04:08:41,203 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:08:41,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-11-03 04:08:41,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/data/6a997a009/1ee8da9ebab84295b307e1dc4e1f0ccf/FLAGd3ffc4fde [2022-11-03 04:08:41,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/data/6a997a009/1ee8da9ebab84295b307e1dc4e1f0ccf [2022-11-03 04:08:41,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:08:41,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:08:41,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:41,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:08:41,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:08:41,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:41" (1/1) ... [2022-11-03 04:08:41,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7581310e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:41, skipping insertion in model container [2022-11-03 04:08:41,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:41" (1/1) ... [2022-11-03 04:08:41,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:08:41,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:08:42,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-11-03 04:08:42,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:42,212 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:08:42,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-11-03 04:08:42,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:42,336 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:08:42,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42 WrapperNode [2022-11-03 04:08:42,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:42,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:42,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:08:42,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:08:42,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,443 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 57, calls inlined = 49, statements flattened = 874 [2022-11-03 04:08:42,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:42,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:08:42,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:08:42,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:08:42,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:08:42,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:08:42,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:08:42,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:08:42,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (1/1) ... [2022-11-03 04:08:42,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:42,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:42,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:08:42,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:08:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 04:08:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 04:08:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 04:08:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 04:08:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 04:08:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 04:08:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 04:08:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 04:08:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 04:08:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 04:08:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 04:08:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 04:08:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 04:08:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 04:08:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 04:08:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 04:08:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 04:08:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:08:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 04:08:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 04:08:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 04:08:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 04:08:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 04:08:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 04:08:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 04:08:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 04:08:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-03 04:08:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-03 04:08:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 04:08:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 04:08:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 04:08:42,661 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 04:08:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 04:08:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 04:08:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 04:08:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 04:08:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:08:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 04:08:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 04:08:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:08:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:08:43,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:08:43,039 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:08:44,009 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:08:44,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:08:44,588 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:08:44,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:44 BoogieIcfgContainer [2022-11-03 04:08:44,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:08:44,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:08:44,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:08:44,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:08:44,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:08:41" (1/3) ... [2022-11-03 04:08:44,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f779687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:44, skipping insertion in model container [2022-11-03 04:08:44,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:42" (2/3) ... [2022-11-03 04:08:44,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f779687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:44, skipping insertion in model container [2022-11-03 04:08:44,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:44" (3/3) ... [2022-11-03 04:08:44,606 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2022-11-03 04:08:44,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:08:44,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:08:44,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:08:44,728 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;@1aa53dc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:08:44,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:08:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-03 04:08:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 04:08:44,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:44,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:44,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash 228193760, now seen corresponding path program 1 times [2022-11-03 04:08:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:44,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058539709] [2022-11-03 04:08:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:08:45,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:45,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058539709] [2022-11-03 04:08:45,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058539709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:45,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:45,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:08:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931638280] [2022-11-03 04:08:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:45,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:08:45,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:08:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:08:45,316 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:08:45,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:45,478 INFO L93 Difference]: Finished difference Result 223 states and 292 transitions. [2022-11-03 04:08:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:08:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-11-03 04:08:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:45,498 INFO L225 Difference]: With dead ends: 223 [2022-11-03 04:08:45,498 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 04:08:45,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:08:45,510 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:45,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 04:08:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-03 04:08:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 91 states have internal predecessors, (119), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-03 04:08:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2022-11-03 04:08:45,579 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 68 [2022-11-03 04:08:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:45,581 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2022-11-03 04:08:45,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:08:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2022-11-03 04:08:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 04:08:45,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:45,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:08:45,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 250701991, now seen corresponding path program 1 times [2022-11-03 04:08:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:45,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526754080] [2022-11-03 04:08:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:08:45,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:45,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526754080] [2022-11-03 04:08:45,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526754080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:45,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:45,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385046390] [2022-11-03 04:08:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:45,971 INFO L87 Difference]: Start difference. First operand 150 states and 200 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:08:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:46,160 INFO L93 Difference]: Finished difference Result 219 states and 280 transitions. [2022-11-03 04:08:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:46,164 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-11-03 04:08:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:46,166 INFO L225 Difference]: With dead ends: 219 [2022-11-03 04:08:46,167 INFO L226 Difference]: Without dead ends: 152 [2022-11-03 04:08:46,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:46,169 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:46,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-03 04:08:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-03 04:08:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-03 04:08:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 202 transitions. [2022-11-03 04:08:46,205 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 202 transitions. Word has length 69 [2022-11-03 04:08:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:46,206 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 202 transitions. [2022-11-03 04:08:46,206 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:08:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 202 transitions. [2022-11-03 04:08:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 04:08:46,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:46,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:46,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:08:46,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:46,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 986992234, now seen corresponding path program 1 times [2022-11-03 04:08:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:46,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436241156] [2022-11-03 04:08:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:08:46,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:46,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436241156] [2022-11-03 04:08:46,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436241156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:46,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:46,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:46,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171094574] [2022-11-03 04:08:46,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:46,335 INFO L87 Difference]: Start difference. First operand 152 states and 202 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:08:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:46,455 INFO L93 Difference]: Finished difference Result 334 states and 463 transitions. [2022-11-03 04:08:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-03 04:08:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:46,462 INFO L225 Difference]: With dead ends: 334 [2022-11-03 04:08:46,464 INFO L226 Difference]: Without dead ends: 200 [2022-11-03 04:08:46,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:46,476 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:46,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 353 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-03 04:08:46,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2022-11-03 04:08:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.403225806451613) internal successors, (174), 125 states have internal predecessors, (174), 52 states have call successors, (52), 18 states have call predecessors, (52), 18 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-03 04:08:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 277 transitions. [2022-11-03 04:08:46,512 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 277 transitions. Word has length 74 [2022-11-03 04:08:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:46,512 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 277 transitions. [2022-11-03 04:08:46,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:08:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 277 transitions. [2022-11-03 04:08:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 04:08:46,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:46,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:46,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:08:46,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash 430471120, now seen corresponding path program 1 times [2022-11-03 04:08:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:46,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843577401] [2022-11-03 04:08:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:08:46,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843577401] [2022-11-03 04:08:46,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843577401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:46,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167665270] [2022-11-03 04:08:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:46,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:46,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:46,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:46,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:08:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:47,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:08:47,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:08:47,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:08:47,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167665270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:08:47,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [906320354] [2022-11-03 04:08:47,449 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 04:08:47,449 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:08:47,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:08:47,466 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:08:47,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:09:26,873 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:09:27,216 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:09:27,551 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 04:09:29,614 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 04:09:29,658 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-03 04:09:42,173 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 04:09:42,209 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-03 04:09:42,255 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-03 04:09:43,012 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:09:56,166 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:02,445 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:30,291 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 498 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:37,811 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 508 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:02,513 WARN L234 SmtUtils]: Spent 23.25s on a formula simplification. DAG size of input: 589 DAG size of output: 462 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:27,240 WARN L234 SmtUtils]: Spent 23.16s on a formula simplification. DAG size of input: 591 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:29,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [906320354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:29,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:12:29,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-03 04:12:29,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98400675] [2022-11-03 04:12:29,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 04:12:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 04:12:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 04:12:29,858 INFO L87 Difference]: Start difference. First operand 195 states and 277 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-03 04:12:42,763 WARN L234 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:52,963 WARN L234 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:03,601 WARN L234 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 589 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:14,294 WARN L234 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 587 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:24,960 WARN L234 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 589 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:35,647 WARN L234 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:49,772 WARN L234 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 590 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:00,977 WARN L234 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 586 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:20,573 INFO L93 Difference]: Finished difference Result 552 states and 849 transitions. [2022-11-03 04:14:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 04:14:20,574 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-11-03 04:14:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:20,586 INFO L225 Difference]: With dead ends: 552 [2022-11-03 04:14:20,587 INFO L226 Difference]: Without dead ends: 375 [2022-11-03 04:14:20,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 253.4s TimeCoverageRelationStatistics Valid=193, Invalid=2887, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 04:14:20,596 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 260 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 5373 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 5404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 4232 Invalid, 5404 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [31 Valid, 5373 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2022-11-03 04:14:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-03 04:14:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 309. [2022-11-03 04:14:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 219 states have (on average 1.452054794520548) internal successors, (318), 221 states have internal predecessors, (318), 65 states have call successors, (65), 25 states have call predecessors, (65), 24 states have return successors, (65), 62 states have call predecessors, (65), 64 states have call successors, (65) [2022-11-03 04:14:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 448 transitions. [2022-11-03 04:14:20,919 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 448 transitions. Word has length 75 [2022-11-03 04:14:20,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 448 transitions. [2022-11-03 04:14:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-03 04:14:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 448 transitions. [2022-11-03 04:14:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 04:14:20,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:20,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:14:20,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:21,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:14:21,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1417034234, now seen corresponding path program 1 times [2022-11-03 04:14:21,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:14:21,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399257326] [2022-11-03 04:14:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:14:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:14:21,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:14:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399257326] [2022-11-03 04:14:21,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399257326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:14:21,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358695987] [2022-11-03 04:14:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:21,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:14:21,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:14:21,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:14:21,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64db144-c392-4686-b9a8-14782c4ebe12/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:14:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:21,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:14:21,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:14:21,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:14:21,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358695987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:14:21,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483305975] [2022-11-03 04:14:21,823 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 04:14:21,823 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:14:21,825 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:14:21,826 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:14:21,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:14:58,884 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:14:59,220 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 04:15:01,002 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 04:15:01,044 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:15:01,377 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-03 04:15:36,073 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 04:15:36,109 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-03 04:15:36,155 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-11-03 04:15:36,910 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 437 for LOIs [2022-11-03 04:15:37,178 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 251 for LOIs [2022-11-03 04:15:37,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:15:49,828 WARN L234 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:55,784 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:23,339 WARN L234 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 498 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:30,360 WARN L234 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 508 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:54,759 WARN L234 SmtUtils]: Spent 22.93s on a formula simplification. DAG size of input: 587 DAG size of output: 462 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:18,893 WARN L234 SmtUtils]: Spent 22.71s on a formula simplification. DAG size of input: 589 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:29,230 WARN L234 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 564 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:39,652 WARN L234 SmtUtils]: Spent 9.80s on a formula simplification. DAG size of input: 560 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:50,581 WARN L234 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 609 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:57,855 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 609 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:09,413 WARN L234 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 607 DAG size of output: 477 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:21,774 WARN L234 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 643 DAG size of output: 513 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:37,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [483305975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:19:37,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:19:37,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-03 04:19:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178952806] [2022-11-03 04:19:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:19:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 04:19:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:19:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 04:19:37,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3125, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 04:19:37,149 INFO L87 Difference]: Start difference. First operand 309 states and 448 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-03 04:19:49,340 WARN L234 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:59,115 WARN L234 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:12,081 WARN L234 SmtUtils]: Spent 12.48s on a formula simplification. DAG size of input: 560 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:25,035 WARN L234 SmtUtils]: Spent 12.34s on a formula simplification. DAG size of input: 558 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:34,812 WARN L234 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 588 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:48,189 WARN L234 SmtUtils]: Spent 11.76s on a formula simplification. DAG size of input: 555 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:21:05,151 WARN L234 SmtUtils]: Spent 14.90s on a formula simplification. DAG size of input: 562 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:21:18,560 WARN L234 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 592 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)