./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d912bb29f92146b3af89aaec6570a3971933bc9b9284807c8f8b532bfb963bf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:25:09,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:25:09,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:25:09,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:25:09,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:25:09,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:25:09,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:25:09,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:25:09,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:25:09,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:25:09,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:25:09,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:25:09,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:25:09,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:25:09,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:25:09,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:25:09,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:25:09,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:25:09,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:25:09,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:25:09,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:25:09,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:25:09,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:25:09,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:25:09,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:25:09,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:25:09,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:25:09,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:25:09,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:25:09,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:25:09,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:25:09,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:25:09,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:25:09,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:25:09,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:25:09,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:25:09,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:25:09,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:25:09,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:25:09,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:25:09,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:25:09,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:25:09,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:25:09,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:25:09,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:25:09,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:25:09,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:25:09,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:25:09,836 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:25:09,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:25:09,836 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:25:09,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:25:09,837 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:25:09,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:25:09,838 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:25:09,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:25:09,838 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:25:09,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:25:09,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:25:09,839 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:25:09,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:25:09,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:25:09,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:25:09,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:25:09,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:25:09,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:25:09,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:25:09,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:25:09,841 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:25:09,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:25:09,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:25:09,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:25:09,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:25:09,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:25:09,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:09,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:25:09,843 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:25:09,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:25:09,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:25:09,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:25:09,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:25:09,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:25:09,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:25:09,845 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_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d912bb29f92146b3af89aaec6570a3971933bc9b9284807c8f8b532bfb963bf [2022-11-03 02:25:10,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:25:10,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:25:10,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:25:10,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:25:10,202 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:25:10,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c [2022-11-03 02:25:10,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/data/58fcfe96c/91eeb346022a4bd08c879d2007c11275/FLAGa59902adb [2022-11-03 02:25:10,893 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:25:10,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c [2022-11-03 02:25:10,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/data/58fcfe96c/91eeb346022a4bd08c879d2007c11275/FLAGa59902adb [2022-11-03 02:25:11,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/data/58fcfe96c/91eeb346022a4bd08c879d2007c11275 [2022-11-03 02:25:11,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:25:11,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:25:11,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:11,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:25:11,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:25:11,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:11" (1/1) ... [2022-11-03 02:25:11,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a987de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:11, skipping insertion in model container [2022-11-03 02:25:11,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:11" (1/1) ... [2022-11-03 02:25:11,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:25:11,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:11,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c[18815,18828] [2022-11-03 02:25:11,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:11,852 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:11,891 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c[18815,18828] [2022-11-03 02:25:11,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:12,021 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:12,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12 WrapperNode [2022-11-03 02:25:12,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:12,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:12,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:12,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:12,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,114 INFO L138 Inliner]: procedures = 127, calls = 209, calls flagged for inlining = 52, calls inlined = 46, statements flattened = 888 [2022-11-03 02:25:12,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:12,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:12,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:12,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:12,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:12,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:12,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:12,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:12,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (1/1) ... [2022-11-03 02:25:12,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:12,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:12,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:12,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:25:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:25:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:25:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:25:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-11-03 02:25:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-11-03 02:25:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:25:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:25:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:25:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:25:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:25:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:25:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:25:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:25:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:25:12,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:25:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:25:12,313 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:25:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:25:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:25:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:25:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:25:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:25:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:25:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:25:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:25:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:25:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:25:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:25:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:25:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:25:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:25:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:25:12,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:25:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-03 02:25:12,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-03 02:25:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:25:12,320 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:25:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:25:12,320 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:25:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:25:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:25:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:25:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:25:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:25:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:25:12,324 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:25:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:25:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:25:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:12,580 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:12,583 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:13,546 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:14,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:14,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:25:14,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:14 BoogieIcfgContainer [2022-11-03 02:25:14,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:14,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:14,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:14,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:14,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:25:11" (1/3) ... [2022-11-03 02:25:14,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7aa20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:14, skipping insertion in model container [2022-11-03 02:25:14,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:12" (2/3) ... [2022-11-03 02:25:14,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7aa20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:14, skipping insertion in model container [2022-11-03 02:25:14,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:14" (3/3) ... [2022-11-03 02:25:14,187 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.c [2022-11-03 02:25:14,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:14,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:14,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:14,267 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;@61825843, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:14,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 101 states have (on average 1.3267326732673268) internal successors, (134), 104 states have internal predecessors, (134), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-03 02:25:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:25:14,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:14,323 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] [2022-11-03 02:25:14,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1447729556, now seen corresponding path program 1 times [2022-11-03 02:25:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:14,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971675936] [2022-11-03 02:25:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:14,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971675936] [2022-11-03 02:25:14,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971675936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:14,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:14,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:25:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969966714] [2022-11-03 02:25:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:25:14,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:25:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:25:14,808 INFO L87 Difference]: Start difference. First operand has 177 states, 101 states have (on average 1.3267326732673268) internal successors, (134), 104 states have internal predecessors, (134), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) 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) [2022-11-03 02:25:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:14,953 INFO L93 Difference]: Finished difference Result 262 states and 343 transitions. [2022-11-03 02:25:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:25:14,956 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 [2022-11-03 02:25:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:14,968 INFO L225 Difference]: With dead ends: 262 [2022-11-03 02:25:14,968 INFO L226 Difference]: Without dead ends: 174 [2022-11-03 02:25:14,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:25:14,975 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-03 02:25:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-03 02:25:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:25:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-11-03 02:25:15,066 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 75 [2022-11-03 02:25:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:15,067 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-11-03 02:25:15,068 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) [2022-11-03 02:25:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-11-03 02:25:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:25:15,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:15,072 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] [2022-11-03 02:25:15,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:25:15,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash 800855232, now seen corresponding path program 1 times [2022-11-03 02:25:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:15,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587932138] [2022-11-03 02:25:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:15,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587932138] [2022-11-03 02:25:15,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587932138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:15,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:15,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113160301] [2022-11-03 02:25:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:15,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:15,411 INFO L87 Difference]: Start difference. First operand 174 states and 229 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) [2022-11-03 02:25:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:15,589 INFO L93 Difference]: Finished difference Result 258 states and 328 transitions. [2022-11-03 02:25:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:15,593 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 [2022-11-03 02:25:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:15,598 INFO L225 Difference]: With dead ends: 258 [2022-11-03 02:25:15,598 INFO L226 Difference]: Without dead ends: 176 [2022-11-03 02:25:15,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:15,600 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:15,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-03 02:25:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-03 02:25:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 103 states have internal predecessors, (130), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:25:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 231 transitions. [2022-11-03 02:25:15,631 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 231 transitions. Word has length 76 [2022-11-03 02:25:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 231 transitions. [2022-11-03 02:25:15,634 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) [2022-11-03 02:25:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 231 transitions. [2022-11-03 02:25:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:25:15,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:15,639 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] [2022-11-03 02:25:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:25:15,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 877486011, now seen corresponding path program 1 times [2022-11-03 02:25:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:15,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107628640] [2022-11-03 02:25:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:15,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:15,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107628640] [2022-11-03 02:25:15,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107628640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:15,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:15,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:15,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116022161] [2022-11-03 02:25:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:15,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:15,855 INFO L87 Difference]: Start difference. First operand 176 states and 231 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) [2022-11-03 02:25:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:16,002 INFO L93 Difference]: Finished difference Result 387 states and 529 transitions. [2022-11-03 02:25:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:16,002 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 [2022-11-03 02:25:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:16,005 INFO L225 Difference]: With dead ends: 387 [2022-11-03 02:25:16,005 INFO L226 Difference]: Without dead ends: 229 [2022-11-03 02:25:16,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:16,008 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 59 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:16,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 408 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-03 02:25:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2022-11-03 02:25:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 135 states have (on average 1.3703703703703705) internal successors, (185), 137 states have internal predecessors, (185), 65 states have call successors, (65), 23 states have call predecessors, (65), 23 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:25:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 314 transitions. [2022-11-03 02:25:16,035 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 314 transitions. Word has length 81 [2022-11-03 02:25:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:16,036 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 314 transitions. [2022-11-03 02:25:16,036 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) [2022-11-03 02:25:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 314 transitions. [2022-11-03 02:25:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:25:16,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:16,043 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] [2022-11-03 02:25:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:25:16,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 533954627, now seen corresponding path program 1 times [2022-11-03 02:25:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:16,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714834428] [2022-11-03 02:25:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:16,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:16,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:16,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714834428] [2022-11-03 02:25:16,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714834428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:16,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83989456] [2022-11-03 02:25:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:16,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:16,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:16,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:16,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:25:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:16,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:25:16,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:16,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:16,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83989456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:16,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889007882] [2022-11-03 02:25:16,791 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-03 02:25:16,791 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:25:16,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:25:16,803 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:25:16,807 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:25:46,111 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:25:46,437 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:25:46,755 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:25:59,268 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:04,864 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:33,082 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 498 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:01,479 WARN L234 SmtUtils]: Spent 21.79s on a formula simplification. DAG size of input: 579 DAG size of output: 449 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:08,511 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 564 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:16,914 WARN L234 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 566 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:27,481 WARN L234 SmtUtils]: Spent 9.99s on a formula simplification. DAG size of input: 568 DAG size of output: 400 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:37,986 WARN L234 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 564 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:39,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [889007882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:39,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:27:39,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-11-03 02:27:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459661755] [2022-11-03 02:27:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:39,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:27:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:27:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:27:39,312 INFO L87 Difference]: Start difference. First operand 224 states and 314 transitions. Second operand has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-03 02:27:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:50,151 INFO L93 Difference]: Finished difference Result 530 states and 795 transitions. [2022-11-03 02:27:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:27:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 82 [2022-11-03 02:27:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:50,162 INFO L225 Difference]: With dead ends: 530 [2022-11-03 02:27:50,162 INFO L226 Difference]: Without dead ends: 324 [2022-11-03 02:27:50,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 112.5s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:27:50,164 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 112 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:50,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 3316 Invalid, 2241 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [14 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 02:27:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-03 02:27:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 247. [2022-11-03 02:27:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 159 states have internal predecessors, (218), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:27:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2022-11-03 02:27:50,276 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 82 [2022-11-03 02:27:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:50,277 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2022-11-03 02:27:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-03 02:27:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2022-11-03 02:27:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:27:50,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:50,282 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] [2022-11-03 02:27:50,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:27:50,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:50,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2029208400, now seen corresponding path program 1 times [2022-11-03 02:27:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:50,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521637701] [2022-11-03 02:27:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:27:50,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:50,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521637701] [2022-11-03 02:27:50,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521637701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:50,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:50,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:50,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545157637] [2022-11-03 02:27:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:50,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:50,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:50,602 INFO L87 Difference]: Start difference. First operand 247 states and 347 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) [2022-11-03 02:27:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:50,909 INFO L93 Difference]: Finished difference Result 597 states and 874 transitions. [2022-11-03 02:27:50,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:50,911 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 [2022-11-03 02:27:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:50,914 INFO L225 Difference]: With dead ends: 597 [2022-11-03 02:27:50,914 INFO L226 Difference]: Without dead ends: 374 [2022-11-03 02:27:50,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:50,916 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 57 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:50,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 419 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:27:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-03 02:27:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 369. [2022-11-03 02:27:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 248 states have (on average 1.4435483870967742) internal successors, (358), 250 states have internal predecessors, (358), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-03 02:27:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 549 transitions. [2022-11-03 02:27:51,100 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 549 transitions. Word has length 87 [2022-11-03 02:27:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:51,101 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 549 transitions. [2022-11-03 02:27:51,101 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) [2022-11-03 02:27:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 549 transitions. [2022-11-03 02:27:51,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:27:51,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:51,104 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, 1] [2022-11-03 02:27:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:27:51,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1628304325, now seen corresponding path program 1 times [2022-11-03 02:27:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:51,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405672829] [2022-11-03 02:27:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:27:51,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405672829] [2022-11-03 02:27:51,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405672829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:27:51,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738517117] [2022-11-03 02:27:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:51,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:51,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:51,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:51,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:27:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:51,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:51,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:27:51,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:27:51,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738517117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:51,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034610502] [2022-11-03 02:27:51,641 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 02:27:51,642 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:27:51,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:27:51,642 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:27:51,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:28:40,238 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:28:40,548 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-03 02:28:40,870 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:28:53,254 WARN L234 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:58,873 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:05,020 WARN L234 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:10,779 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:31,338 WARN L234 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 498 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:52,199 WARN L234 SmtUtils]: Spent 14.97s on a formula simplification. DAG size of input: 579 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:23,963 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 580 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:23,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1034610502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:23,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:30:23,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:30:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861931020] [2022-11-03 02:30:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:23,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:30:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:30:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:30:23,974 INFO L87 Difference]: Start difference. First operand 369 states and 549 transitions. Second operand has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-03 02:30:31,179 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 409 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:52,595 INFO L93 Difference]: Finished difference Result 824 states and 1285 transitions. [2022-11-03 02:30:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:30:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 88 [2022-11-03 02:30:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:52,603 INFO L225 Difference]: With dead ends: 824 [2022-11-03 02:30:52,603 INFO L226 Difference]: Without dead ends: 518 [2022-11-03 02:30:52,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 121.9s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:30:52,606 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 137 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:52,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2935 Invalid, 2243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:30:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-03 02:30:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 418. [2022-11-03 02:30:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 293 states have (on average 1.477815699658703) internal successors, (433), 297 states have internal predecessors, (433), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-03 02:30:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 630 transitions. [2022-11-03 02:30:52,842 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 630 transitions. Word has length 88 [2022-11-03 02:30:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:52,842 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 630 transitions. [2022-11-03 02:30:52,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-03 02:30:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 630 transitions. [2022-11-03 02:30:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:30:52,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:52,845 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, 1, 1, 1, 1] [2022-11-03 02:30:52,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:53,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:53,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:53,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:53,055 INFO L85 PathProgramCache]: Analyzing trace with hash -102062175, now seen corresponding path program 1 times [2022-11-03 02:30:53,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:53,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572297963] [2022-11-03 02:30:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:53,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:30:53,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:53,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572297963] [2022-11-03 02:30:53,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572297963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:53,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989273065] [2022-11-03 02:30:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:53,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:53,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:53,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:53,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:30:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:53,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:30:53,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:30:53,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:30:53,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989273065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:30:53,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1004015736] [2022-11-03 02:30:53,716 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-11-03 02:30:53,717 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:30:53,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:30:53,718 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:30:53,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:32:45,312 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:32:45,636 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2022-11-03 02:32:45,698 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2022-11-03 02:32:45,763 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 224 for LOIs [2022-11-03 02:32:47,248 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-03 02:32:47,328 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-11-03 02:32:47,362 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:32:47,722 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 226 for LOIs [2022-11-03 02:32:50,429 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 213 for LOIs [2022-11-03 02:32:50,464 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 226 for LOIs [2022-11-03 02:32:54,498 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 385 for LOIs [2022-11-03 02:32:54,695 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 219 for LOIs [2022-11-03 02:32:54,727 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-03 02:32:56,195 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:33:09,009 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:15,048 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:43,743 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 498 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:01,218 WARN L234 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 632 DAG size of output: 405 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:31,550 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 424 DAG size of output: 240 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:04,801 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 436 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:10,877 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 452 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:22,940 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 472 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:26,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1004015736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:26,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:35:26,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [4, 4, 4] total 64 [2022-11-03 02:35:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096438819] [2022-11-03 02:35:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-03 02:35:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-03 02:35:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3860, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 02:35:26,998 INFO L87 Difference]: Start difference. First operand 418 states and 630 transitions. Second operand has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-03 02:36:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:27,946 INFO L93 Difference]: Finished difference Result 938 states and 1448 transitions. [2022-11-03 02:36:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-03 02:36:27,947 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) Word has length 91 [2022-11-03 02:36:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:27,951 INFO L225 Difference]: With dead ends: 938 [2022-11-03 02:36:27,951 INFO L226 Difference]: Without dead ends: 632 [2022-11-03 02:36:27,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 177.6s TimeCoverageRelationStatistics Valid=262, Invalid=5438, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 02:36:27,955 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 312 mSDsluCounter, 6557 mSDsCounter, 0 mSdLazyCounter, 9650 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 6643 SdHoareTripleChecker+Invalid, 9704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 9650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:27,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 6643 Invalid, 9704 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [54 Valid, 9650 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2022-11-03 02:36:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-03 02:36:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 566. [2022-11-03 02:36:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 412 states have (on average 1.4975728155339805) internal successors, (617), 419 states have internal predecessors, (617), 119 states have call successors, (119), 36 states have call predecessors, (119), 34 states have return successors, (119), 110 states have call predecessors, (119), 118 states have call successors, (119) [2022-11-03 02:36:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 855 transitions. [2022-11-03 02:36:28,354 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 855 transitions. Word has length 91 [2022-11-03 02:36:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:28,355 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 855 transitions. [2022-11-03 02:36:28,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-03 02:36:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 855 transitions. [2022-11-03 02:36:28,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:36:28,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:28,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:28,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 02:36:28,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:36:28,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash -885216654, now seen corresponding path program 1 times [2022-11-03 02:36:28,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:28,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339953236] [2022-11-03 02:36:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:36:28,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:28,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339953236] [2022-11-03 02:36:28,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339953236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:36:28,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854888317] [2022-11-03 02:36:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:28,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:28,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:28,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:28,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9f7ba16-a412-426e-bb06-42e191906ec6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:36:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:29,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:36:29,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:36:29,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:36:29,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854888317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:29,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [784494912] [2022-11-03 02:36:29,144 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-03 02:36:29,145 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:36:29,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:36:29,145 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:36:29,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs