./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0 --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 7f7652bf269245a8144605490a4a891295a82bf8357d2cf3971e290586b4e5c1 --- 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-e04fb08 [2022-11-16 16:28:50,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:28:50,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:28:50,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:28:50,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:28:50,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:28:50,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:28:50,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:28:50,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:28:50,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:28:50,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:28:50,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:28:50,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:28:50,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:28:50,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:28:50,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:28:50,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:28:50,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:28:50,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:28:50,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:28:50,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:28:50,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:28:50,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:28:50,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:28:50,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:28:50,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:28:50,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:28:50,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:28:50,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:28:50,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:28:50,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:28:50,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:28:50,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:28:50,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:28:50,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:28:50,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:28:50,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:28:50,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:28:50,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:28:50,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:28:50,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:28:50,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:28:50,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:28:50,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:28:50,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:28:50,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:28:50,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:28:50,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:28:50,871 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:28:50,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:28:50,871 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:28:50,871 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:28:50,873 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:28:50,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:28:50,873 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:28:50,873 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:28:50,873 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:28:50,874 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:28:50,874 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:28:50,874 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:28:50,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:28:50,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:28:50,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:28:50,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:28:50,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:28:50,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:28:50,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:28:50,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:28:50,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:28:50,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:28:50,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:28:50,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:28:50,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:28:50,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:28:50,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:50,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:28:50,880 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:28:50,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:28:50,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:28:50,880 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:28:50,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:28:50,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:28:50,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:28:50,881 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_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7652bf269245a8144605490a4a891295a82bf8357d2cf3971e290586b4e5c1 [2022-11-16 16:28:51,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:28:51,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:28:51,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:28:51,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:28:51,199 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:28:51,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec27_product27.cil.c [2022-11-16 16:28:51,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/data/3364eb9aa/2d98936419e2446b889859b64ee3889f/FLAGeac35614c [2022-11-16 16:28:51,858 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:28:51,859 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/sv-benchmarks/c/product-lines/email_spec27_product27.cil.c [2022-11-16 16:28:51,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/data/3364eb9aa/2d98936419e2446b889859b64ee3889f/FLAGeac35614c [2022-11-16 16:28:52,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/data/3364eb9aa/2d98936419e2446b889859b64ee3889f [2022-11-16 16:28:52,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:28:52,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:28:52,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:52,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:28:52,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:28:52,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510db3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52, skipping insertion in model container [2022-11-16 16:28:52,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:28:52,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:28:52,872 WARN L229 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_d7443cfb-67e6-43f1-85e7-899764b2f1c6/sv-benchmarks/c/product-lines/email_spec27_product27.cil.c[57688,57701] [2022-11-16 16:28:52,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:52,945 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:28:53,039 WARN L229 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_d7443cfb-67e6-43f1-85e7-899764b2f1c6/sv-benchmarks/c/product-lines/email_spec27_product27.cil.c[57688,57701] [2022-11-16 16:28:53,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:53,078 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:28:53,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53 WrapperNode [2022-11-16 16:28:53,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:53,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:53,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:28:53,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:28:53,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,182 INFO L138 Inliner]: procedures = 133, calls = 229, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 1079 [2022-11-16 16:28:53,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:53,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:28:53,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:28:53,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:28:53,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:28:53,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:28:53,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:28:53,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:28:53,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (1/1) ... [2022-11-16 16:28:53,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:53,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:53,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:28:53,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:28:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 16:28:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 16:28:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 16:28:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 16:28:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 16:28:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 16:28:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-16 16:28:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-16 16:28:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 16:28:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 16:28:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-16 16:28:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-16 16:28:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 16:28:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 16:28:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-16 16:28:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-16 16:28:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 16:28:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 16:28:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 16:28:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 16:28:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 16:28:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-16 16:28:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-16 16:28:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 16:28:53,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 16:28:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:28:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-16 16:28:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-16 16:28:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 16:28:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 16:28:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 16:28:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 16:28:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 16:28:53,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 16:28:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 16:28:53,407 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 16:28:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-16 16:28:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-16 16:28:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-16 16:28:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-16 16:28:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 16:28:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 16:28:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 16:28:53,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 16:28:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 16:28:53,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 16:28:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:28:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 16:28:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 16:28:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 16:28:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 16:28:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:28:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:28:53,645 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:28:53,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:28:54,735 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:28:55,417 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:28:55,418 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:28:55,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:55 BoogieIcfgContainer [2022-11-16 16:28:55,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:28:55,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:28:55,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:28:55,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:28:55,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:28:52" (1/3) ... [2022-11-16 16:28:55,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a61195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:55, skipping insertion in model container [2022-11-16 16:28:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:53" (2/3) ... [2022-11-16 16:28:55,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a61195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:55, skipping insertion in model container [2022-11-16 16:28:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:55" (3/3) ... [2022-11-16 16:28:55,433 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product27.cil.c [2022-11-16 16:28:55,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:28:55,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:28:55,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:28:55,560 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;@677ef715, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:28:55,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:28:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 119 states have internal predecessors, (151), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-16 16:28:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 16:28:55,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:55,598 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, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:55,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:28:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1959112043, now seen corresponding path program 1 times [2022-11-16 16:28:55,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:55,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028495046] [2022-11-16 16:28:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:55,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:28:56,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:56,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028495046] [2022-11-16 16:28:56,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028495046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:56,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:56,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321009191] [2022-11-16 16:28:56,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:28:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:28:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:28:56,101 INFO L87 Difference]: Start difference. First operand has 204 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 119 states have internal predecessors, (151), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:28:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:56,276 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2022-11-16 16:28:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:28:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-11-16 16:28:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:56,300 INFO L225 Difference]: With dead ends: 316 [2022-11-16 16:28:56,300 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 16:28:56,310 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 [2022-11-16 16:28:56,317 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:56,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 16:28:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-16 16:28:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 116 states have internal predecessors, (145), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-16 16:28:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 268 transitions. [2022-11-16 16:28:56,385 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 268 transitions. Word has length 75 [2022-11-16 16:28:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:56,387 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 268 transitions. [2022-11-16 16:28:56,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:28:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 268 transitions. [2022-11-16 16:28:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 16:28:56,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:56,391 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:56,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:28:56,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:28:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash 973138729, now seen corresponding path program 1 times [2022-11-16 16:28:56,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:56,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309189118] [2022-11-16 16:28:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:28:56,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:56,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309189118] [2022-11-16 16:28:56,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309189118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:56,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:56,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:28:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332834611] [2022-11-16 16:28:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:56,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:56,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:56,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:56,784 INFO L87 Difference]: Start difference. First operand 201 states and 268 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:28:56,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:56,992 INFO L93 Difference]: Finished difference Result 312 states and 406 transitions. [2022-11-16 16:28:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:56,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-11-16 16:28:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:56,996 INFO L225 Difference]: With dead ends: 312 [2022-11-16 16:28:56,996 INFO L226 Difference]: Without dead ends: 203 [2022-11-16 16:28:56,998 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 [2022-11-16 16:28:56,999 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:57,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-16 16:28:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-16 16:28:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 118 states have internal predecessors, (147), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-16 16:28:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2022-11-16 16:28:57,018 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 76 [2022-11-16 16:28:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:57,019 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2022-11-16 16:28:57,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:28:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2022-11-16 16:28:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 16:28:57,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:57,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:57,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:28:57,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:28:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash 996357324, now seen corresponding path program 1 times [2022-11-16 16:28:57,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:57,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002699272] [2022-11-16 16:28:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:57,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:28:57,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002699272] [2022-11-16 16:28:57,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002699272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:57,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:57,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:28:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580375082] [2022-11-16 16:28:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:57,139 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:28:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:57,273 INFO L93 Difference]: Finished difference Result 441 states and 607 transitions. [2022-11-16 16:28:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-16 16:28:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:57,276 INFO L225 Difference]: With dead ends: 441 [2022-11-16 16:28:57,276 INFO L226 Difference]: Without dead ends: 256 [2022-11-16 16:28:57,277 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 [2022-11-16 16:28:57,278 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 59 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:57,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 466 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-16 16:28:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-11-16 16:28:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 152 states have internal predecessors, (202), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-16 16:28:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 353 transitions. [2022-11-16 16:28:57,299 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 353 transitions. Word has length 81 [2022-11-16 16:28:57,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:57,300 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 353 transitions. [2022-11-16 16:28:57,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:28:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 353 transitions. [2022-11-16 16:28:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 16:28:57,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:57,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:57,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:28:57,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:28:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:57,304 INFO L85 PathProgramCache]: Analyzing trace with hash -694188139, now seen corresponding path program 1 times [2022-11-16 16:28:57,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:57,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373840783] [2022-11-16 16:28:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:57,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:28:57,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373840783] [2022-11-16 16:28:57,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373840783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:57,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846252327] [2022-11-16 16:28:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:57,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:57,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:57,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:57,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:28:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:57,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:28:57,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:28:57,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:28:58,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846252327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:58,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607223585] [2022-11-16 16:28:58,107 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-16 16:28:58,107 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:58,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:58,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:58,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:29:44,255 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 16:29:44,569 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 468 for LOIs [2022-11-16 16:30:20,403 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-11-16 16:30:20,724 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-16 16:30:21,040 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 466 for LOIs [2022-11-16 16:30:36,167 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-16 16:30:41,442 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 434 for LOIs [2022-11-16 16:30:41,713 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-16 16:30:41,755 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-16 16:30:42,514 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 444 for LOIs [2022-11-16 16:30:42,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:30:55,930 WARN L233 SmtUtils]: Spent 5.09s 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) [2022-11-16 16:31:01,287 WARN L233 SmtUtils]: Spent 5.26s 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) [2022-11-16 16:31:35,073 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 508 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:31:46,151 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 589 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:31:52,137 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 555 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:31:58,115 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 557 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:32:05,002 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 561 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:32:11,869 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 557 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:32:18,816 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 563 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:32:24,825 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 556 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:32:35,653 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 482 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:32:47,790 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 522 DAG size of output: 299 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:33:01,903 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 518 DAG size of output: 282 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:33:08,467 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 531 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:33:19,459 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 568 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:33:47,519 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 497 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:33:55,738 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 513 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:34:09,618 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 533 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:34:15,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [607223585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:34:15,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:34:15,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [4, 4, 4] total 55 [2022-11-16 16:34:15,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621041209] [2022-11-16 16:34:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:34:15,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 16:34:15,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:34:15,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 16:34:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2820, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 16:34:15,195 INFO L87 Difference]: Start difference. First operand 251 states and 353 transitions. Second operand has 50 states, 33 states have (on average 1.303030303030303) internal successors, (43), 30 states have internal predecessors, (43), 16 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-16 16:35:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:35:30,023 INFO L93 Difference]: Finished difference Result 671 states and 1014 transitions. [2022-11-16 16:35:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 16:35:30,025 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 33 states have (on average 1.303030303030303) internal successors, (43), 30 states have internal predecessors, (43), 16 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 82 [2022-11-16 16:35:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:35:30,028 INFO L225 Difference]: With dead ends: 671 [2022-11-16 16:35:30,029 INFO L226 Difference]: Without dead ends: 438 [2022-11-16 16:35:30,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 253.6s TimeCoverageRelationStatistics Valid=216, Invalid=3816, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 16:35:30,032 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 337 mSDsluCounter, 5661 mSDsCounter, 0 mSdLazyCounter, 7831 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 7868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 7831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:35:30,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 5937 Invalid, 7868 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [37 Valid, 7831 Invalid, 0 Unknown, 0 Unchecked, 32.7s Time] [2022-11-16 16:35:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-16 16:35:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 330. [2022-11-16 16:35:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 207 states have (on average 1.3429951690821256) internal successors, (278), 210 states have internal predecessors, (278), 91 states have call successors, (91), 33 states have call predecessors, (91), 31 states have return successors, (91), 86 states have call predecessors, (91), 90 states have call successors, (91) [2022-11-16 16:35:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 460 transitions. [2022-11-16 16:35:30,206 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 460 transitions. Word has length 82 [2022-11-16 16:35:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:35:30,207 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 460 transitions. [2022-11-16 16:35:30,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 33 states have (on average 1.303030303030303) internal successors, (43), 30 states have internal predecessors, (43), 16 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-16 16:35:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 460 transitions. [2022-11-16 16:35:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 16:35:30,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:35:30,210 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:35:30,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:35:30,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:35:30,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:35:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:35:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 970244270, now seen corresponding path program 1 times [2022-11-16 16:35:30,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:35:30,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633587397] [2022-11-16 16:35:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:35:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:35:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:35:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 16:35:30,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:35:30,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633587397] [2022-11-16 16:35:30,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633587397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:35:30,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:35:30,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:35:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665510917] [2022-11-16 16:35:30,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:35:30,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:35:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:35:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:35:30,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:35:30,557 INFO L87 Difference]: Start difference. First operand 330 states and 460 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 16:35:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:35:30,987 INFO L93 Difference]: Finished difference Result 762 states and 1100 transitions. [2022-11-16 16:35:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:35:30,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 87 [2022-11-16 16:35:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:35:30,990 INFO L225 Difference]: With dead ends: 762 [2022-11-16 16:35:30,991 INFO L226 Difference]: Without dead ends: 458 [2022-11-16 16:35:30,992 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 [2022-11-16 16:35:30,993 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 57 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:35:30,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 485 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:35:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-16 16:35:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 451. [2022-11-16 16:35:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 297 states have (on average 1.4074074074074074) internal successors, (418), 300 states have internal predecessors, (418), 122 states have call successors, (122), 33 states have call predecessors, (122), 31 states have return successors, (122), 117 states have call predecessors, (122), 121 states have call successors, (122) [2022-11-16 16:35:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 662 transitions. [2022-11-16 16:35:31,216 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 662 transitions. Word has length 87 [2022-11-16 16:35:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:35:31,216 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 662 transitions. [2022-11-16 16:35:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 16:35:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 662 transitions. [2022-11-16 16:35:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 16:35:31,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:35:31,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:35:31,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:35:31,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:35:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:35:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 96626831, now seen corresponding path program 1 times [2022-11-16 16:35:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:35:31,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845553747] [2022-11-16 16:35:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:35:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:35:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:35:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:35:31,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:35:31,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845553747] [2022-11-16 16:35:31,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845553747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:35:31,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105557935] [2022-11-16 16:35:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:35:31,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:35:31,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:35:31,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:35:31,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7443cfb-67e6-43f1-85e7-899764b2f1c6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:35:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:35:31,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:35:31,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:35:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:35:31,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:35:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:35:31,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105557935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:35:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1614183169] [2022-11-16 16:35:31,835 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-16 16:35:31,836 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:35:31,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:35:31,836 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:35:31,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:36:11,420 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-16 16:36:11,733 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 468 for LOIs [2022-11-16 16:36:47,668 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-11-16 16:36:48,016 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-16 16:36:48,340 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 466 for LOIs [2022-11-16 16:37:13,749 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-16 16:37:34,406 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 434 for LOIs [2022-11-16 16:37:34,651 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-16 16:37:34,693 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-16 16:37:35,444 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 250 for LOIs [2022-11-16 16:37:35,488 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 434 for LOIs [2022-11-16 16:37:35,747 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 455 for LOIs [2022-11-16 16:37:36,620 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:38:25,841 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 508 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:38:41,335 WARN L233 SmtUtils]: Spent 15.20s on a formula simplification. DAG size of input: 585 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:38:47,373 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 555 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:38:53,464 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 557 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:00,535 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 561 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:07,503 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 557 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:14,541 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 563 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:20,641 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 556 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:26,010 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:32,362 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 482 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:39:46,052 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 522 DAG size of output: 299 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:40:00,255 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 518 DAG size of output: 282 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:40:06,955 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 531 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:40:18,035 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 568 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:40:24,888 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 455 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:40:31,960 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 479 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:40:52,886 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 497 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:01,124 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 513 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:15,205 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 533 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:26,625 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 434 DAG size of output: 316 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:32,575 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 452 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:39,376 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 528 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:46,234 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 528 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:41:53,072 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 527 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:42:00,919 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 571 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:42:09,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1614183169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:42:09,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:42:09,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [4, 4, 4] total 65 [2022-11-16 16:42:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352852763] [2022-11-16 16:42:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:42:09,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-16 16:42:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:42:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-16 16:42:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3955, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 16:42:09,916 INFO L87 Difference]: Start difference. First operand 451 states and 662 transitions. Second operand has 60 states, 40 states have (on average 1.15) internal successors, (46), 36 states have internal predecessors, (46), 18 states have call successors, (19), 13 states have call predecessors, (19), 10 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 16:42:20,054 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 490 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)