./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/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_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/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_f731f92a-e073-4527-a98a-f5cc4ee57ad8/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 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:40:15,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:40:15,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:40:15,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:40:15,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:40:15,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:40:15,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:40:15,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:40:15,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:40:15,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:40:15,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:40:15,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:40:15,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:40:15,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:40:15,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:40:15,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:40:15,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:40:15,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:40:15,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:40:15,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:40:15,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:40:15,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:40:15,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:40:15,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:40:15,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:40:15,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:40:15,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:40:15,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:40:15,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:40:15,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:40:15,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:40:15,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:40:15,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:40:15,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:40:15,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:40:15,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:40:15,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:40:15,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:40:15,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:40:15,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:40:15,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:40:15,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:40:15,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:40:15,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:40:15,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:40:15,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:40:15,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:40:15,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:40:15,381 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:40:15,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:40:15,382 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:40:15,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:40:15,382 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:40:15,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:40:15,383 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:40:15,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:40:15,398 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:40:15,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:40:15,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:40:15,399 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:40:15,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:40:15,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:40:15,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:40:15,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:40:15,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:40:15,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:40:15,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:40:15,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:40:15,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:40:15,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:40:15,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:40:15,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:40:15,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:40:15,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:40:15,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:40:15,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:40:15,407 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:40:15,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:40:15,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:40:15,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:40:15,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:40:15,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:40:15,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:40:15,411 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_f731f92a-e073-4527-a98a-f5cc4ee57ad8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 [2022-11-03 02:40:15,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:40:15,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:40:15,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:40:15,749 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:40:15,750 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:40:15,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-11-03 02:40:15,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/data/f01f11f5d/0013df9bc29b4f26a74bdbc998750e11/FLAGccddd36a9 [2022-11-03 02:40:16,557 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:40:16,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-11-03 02:40:16,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/data/f01f11f5d/0013df9bc29b4f26a74bdbc998750e11/FLAGccddd36a9 [2022-11-03 02:40:16,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/data/f01f11f5d/0013df9bc29b4f26a74bdbc998750e11 [2022-11-03 02:40:16,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:40:16,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:40:16,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:40:16,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:40:16,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:40:16,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:40:16" (1/1) ... [2022-11-03 02:40:16,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee11b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:16, skipping insertion in model container [2022-11-03 02:40:16,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:40:16" (1/1) ... [2022-11-03 02:40:16,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:40:16,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:40:17,054 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_f731f92a-e073-4527-a98a-f5cc4ee57ad8/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c[1542,1555] [2022-11-03 02:40:17,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:40:17,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:40:17,664 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_f731f92a-e073-4527-a98a-f5cc4ee57ad8/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c[1542,1555] [2022-11-03 02:40:17,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:40:17,784 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:40:17,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17 WrapperNode [2022-11-03 02:40:17,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:40:17,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:40:17,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:40:17,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:40:17,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,867 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 829 [2022-11-03 02:40:17,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:40:17,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:40:17,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:40:17,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:40:17,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:40:17,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:40:17,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:40:17,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:40:17,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (1/1) ... [2022-11-03 02:40:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:40:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:17,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:40:17,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:40:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:40:18,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:40:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:40:18,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:40:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:40:18,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:40:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:40:18,041 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:40:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:40:18,041 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:40:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:40:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:40:18,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:40:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 02:40:18,042 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 02:40:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:40:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:40:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:40:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:40:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:40:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:40:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:40:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:40:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:40:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:40:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:40:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:40:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:40:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:40:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:40:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:40:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:40:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:40:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:40:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:40:18,235 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:40:18,237 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:40:19,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:40:19,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:40:19,447 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:40:19,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:40:19 BoogieIcfgContainer [2022-11-03 02:40:19,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:40:19,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:40:19,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:40:19,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:40:19,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:40:16" (1/3) ... [2022-11-03 02:40:19,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd260f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:40:19, skipping insertion in model container [2022-11-03 02:40:19,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:17" (2/3) ... [2022-11-03 02:40:19,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd260f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:40:19, skipping insertion in model container [2022-11-03 02:40:19,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:40:19" (3/3) ... [2022-11-03 02:40:19,462 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product37.cil.c [2022-11-03 02:40:19,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:40:19,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:40:19,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:40:19,565 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;@36cd58c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:40:19,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:40:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-03 02:40:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 02:40:19,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:19,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:19,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1297728867, now seen corresponding path program 1 times [2022-11-03 02:40:19,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:19,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773824905] [2022-11-03 02:40:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:40:20,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773824905] [2022-11-03 02:40:20,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773824905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:20,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:20,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:40:20,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228365838] [2022-11-03 02:40:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:40:20,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:40:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:40:20,148 INFO L87 Difference]: Start difference. First operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:40:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:20,316 INFO L93 Difference]: Finished difference Result 199 states and 266 transitions. [2022-11-03 02:40:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:40:20,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-03 02:40:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:20,338 INFO L225 Difference]: With dead ends: 199 [2022-11-03 02:40:20,338 INFO L226 Difference]: Without dead ends: 138 [2022-11-03 02:40:20,344 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 02:40:20,349 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:20,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:40:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-03 02:40:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-03 02:40:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 83 states have internal predecessors, (108), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-03 02:40:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2022-11-03 02:40:20,456 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 60 [2022-11-03 02:40:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:20,459 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2022-11-03 02:40:20,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:40:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2022-11-03 02:40:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:40:20,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:20,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:20,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:40:20,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1184471534, now seen corresponding path program 1 times [2022-11-03 02:40:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:20,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820351031] [2022-11-03 02:40:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:20,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:40:20,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:20,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820351031] [2022-11-03 02:40:20,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820351031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:20,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:20,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:40:20,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887877013] [2022-11-03 02:40:20,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:20,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:40:20,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:40:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:20,836 INFO L87 Difference]: Start difference. First operand 138 states and 187 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:40:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:21,014 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2022-11-03 02:40:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-03 02:40:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:21,023 INFO L225 Difference]: With dead ends: 195 [2022-11-03 02:40:21,023 INFO L226 Difference]: Without dead ends: 140 [2022-11-03 02:40:21,029 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 02:40:21,031 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:40:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-03 02:40:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-03 02:40:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 85 states have internal predecessors, (110), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-03 02:40:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 189 transitions. [2022-11-03 02:40:21,072 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 189 transitions. Word has length 61 [2022-11-03 02:40:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:21,074 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 189 transitions. [2022-11-03 02:40:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:40:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 189 transitions. [2022-11-03 02:40:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:40:21,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:21,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:40:21,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1952706249, now seen corresponding path program 1 times [2022-11-03 02:40:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092155734] [2022-11-03 02:40:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:21,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:40:21,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:21,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092155734] [2022-11-03 02:40:21,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092155734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:21,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:21,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:40:21,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040684905] [2022-11-03 02:40:21,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:21,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:40:21,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:40:21,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:21,297 INFO L87 Difference]: Start difference. First operand 140 states and 189 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:40:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:21,434 INFO L93 Difference]: Finished difference Result 310 states and 437 transitions. [2022-11-03 02:40:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-03 02:40:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:21,438 INFO L225 Difference]: With dead ends: 310 [2022-11-03 02:40:21,439 INFO L226 Difference]: Without dead ends: 188 [2022-11-03 02:40:21,447 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 02:40:21,453 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 57 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:21,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 337 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:40:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-03 02:40:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2022-11-03 02:40:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 117 states have internal predecessors, (163), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:40:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2022-11-03 02:40:21,480 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 66 [2022-11-03 02:40:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:21,481 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2022-11-03 02:40:21,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:40:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2022-11-03 02:40:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:40:21,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:21,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:40:21,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1610137364, now seen corresponding path program 1 times [2022-11-03 02:40:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:21,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164198974] [2022-11-03 02:40:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:40:21,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164198974] [2022-11-03 02:40:21,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164198974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:40:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074885881] [2022-11-03 02:40:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:21,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:40:21,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:21,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:40:21,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:40:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:22,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:40:22,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:40:22,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:40:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:40:22,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074885881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:40:22,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601492162] [2022-11-03 02:40:22,211 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-03 02:40:22,211 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:40:22,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:40:22,222 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:40:22,223 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:41:04,499 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:41:04,825 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:41:05,168 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:41:44,596 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:53,230 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:00,849 WARN L234 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:19,052 WARN L234 SmtUtils]: Spent 17.87s on a formula simplification. DAG size of input: 588 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:34,533 WARN L234 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 572 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:39,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [601492162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:39,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:42:39,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 02:42:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257409664] [2022-11-03 02:42:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:42:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:42:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:42:39,994 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 02:43:02,142 WARN L234 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 513 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:43:09,737 WARN L234 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 500 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:43:17,086 WARN L234 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 510 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:43:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:23,937 INFO L93 Difference]: Finished difference Result 449 states and 696 transitions. [2022-11-03 02:43:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:43:23,947 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 67 [2022-11-03 02:43:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:23,956 INFO L225 Difference]: With dead ends: 449 [2022-11-03 02:43:23,956 INFO L226 Difference]: Without dead ends: 284 [2022-11-03 02:43:23,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 129.6s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:43:23,960 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 280 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:23,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 2428 Invalid, 1830 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [28 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:43:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-03 02:43:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 211. [2022-11-03 02:43:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 144 states have internal predecessors, (202), 51 states have call successors, (51), 16 states have call predecessors, (51), 16 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:43:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2022-11-03 02:43:24,123 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 67 [2022-11-03 02:43:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:24,124 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2022-11-03 02:43:24,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 02:43:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2022-11-03 02:43:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:43:24,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:24,126 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:43:24,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:24,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:43:24,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1088883107, now seen corresponding path program 1 times [2022-11-03 02:43:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248890155] [2022-11-03 02:43:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:43:24,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:24,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248890155] [2022-11-03 02:43:24,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248890155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:43:24,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312092674] [2022-11-03 02:43:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:24,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:43:24,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:43:24,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:43:24,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:43:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:24,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:43:24,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:43:24,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:43:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:43:24,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312092674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:43:24,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1008414825] [2022-11-03 02:43:24,870 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-03 02:43:24,870 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:43:24,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:43:24,871 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:43:24,871 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:44:15,124 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:44:15,437 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-03 02:44:15,766 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:44:28,366 WARN L234 SmtUtils]: Spent 5.42s 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 02:44:34,249 WARN L234 SmtUtils]: Spent 5.74s 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 02:44:40,516 WARN L234 SmtUtils]: Spent 5.32s 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 02:44:46,705 WARN L234 SmtUtils]: Spent 5.97s 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 02:45:01,338 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:09,332 WARN L234 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:16,431 WARN L234 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:30,211 WARN L234 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 583 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:03,959 WARN L234 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 584 DAG size of output: 400 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:03,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1008414825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:03,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:46:03,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:46:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484841895] [2022-11-03 02:46:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:03,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:46:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:46:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:46:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:46:03,967 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 02:46:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:44,781 INFO L93 Difference]: Finished difference Result 492 states and 754 transitions. [2022-11-03 02:46:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:46:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 73 [2022-11-03 02:46:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:44,784 INFO L225 Difference]: With dead ends: 492 [2022-11-03 02:46:44,785 INFO L226 Difference]: Without dead ends: 327 [2022-11-03 02:46:44,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 138.9s TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:46:44,787 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 238 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:44,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 2484 Invalid, 2145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-03 02:46:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-03 02:46:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 254. [2022-11-03 02:46:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.46448087431694) internal successors, (268), 185 states have internal predecessors, (268), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:46:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2022-11-03 02:46:44,995 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 73 [2022-11-03 02:46:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:44,996 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2022-11-03 02:46:44,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 02:46:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2022-11-03 02:46:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:46:44,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:44,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:45,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:46:45,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:45,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash -650245508, now seen corresponding path program 1 times [2022-11-03 02:46:45,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:45,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357754667] [2022-11-03 02:46:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:45,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:46:45,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:45,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357754667] [2022-11-03 02:46:45,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357754667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229074958] [2022-11-03 02:46:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:45,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:45,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:45,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:46:45,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:46:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:45,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:46:45,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:46:45,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:46:45,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229074958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1265624846] [2022-11-03 02:46:45,816 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-03 02:46:45,817 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:46:45,817 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:46:45,817 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:46:45,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:47:43,014 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:47:43,319 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-03 02:47:43,384 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 450 for LOIs [2022-11-03 02:47:43,728 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:47:44,028 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-03 02:47:44,093 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:47:56,542 WARN L234 SmtUtils]: Spent 5.40s 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 02:48:02,449 WARN L234 SmtUtils]: Spent 5.75s 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 02:48:24,756 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:32,796 WARN L234 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:40,506 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:54,499 WARN L234 SmtUtils]: Spent 12.61s on a formula simplification. DAG size of input: 636 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:09,191 WARN L234 SmtUtils]: Spent 13.04s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:32,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1265624846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:32,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:49:32,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-03 02:49:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644934598] [2022-11-03 02:49:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:32,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:49:32,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:49:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:49:32,312 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand has 29 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-03 02:49:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:53,319 INFO L93 Difference]: Finished difference Result 562 states and 873 transitions. [2022-11-03 02:49:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:49:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 76 [2022-11-03 02:49:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:53,322 INFO L225 Difference]: With dead ends: 562 [2022-11-03 02:49:53,322 INFO L226 Difference]: Without dead ends: 397 [2022-11-03 02:49:53,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 115.1s TimeCoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:49:53,324 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 142 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:53,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 3085 Invalid, 3025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-03 02:49:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-03 02:49:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 350. [2022-11-03 02:49:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 272 states have (on average 1.5183823529411764) internal successors, (413), 275 states have internal predecessors, (413), 57 states have call successors, (57), 20 states have call predecessors, (57), 20 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-03 02:49:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 526 transitions. [2022-11-03 02:49:53,617 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 526 transitions. Word has length 76 [2022-11-03 02:49:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:53,618 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 526 transitions. [2022-11-03 02:49:53,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-03 02:49:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 526 transitions. [2022-11-03 02:49:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:49:53,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:53,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:53,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:53,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:49:53,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash 717072759, now seen corresponding path program 1 times [2022-11-03 02:49:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:53,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839968141] [2022-11-03 02:49:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:53,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:49:53,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:53,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839968141] [2022-11-03 02:49:53,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839968141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:49:53,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543998446] [2022-11-03 02:49:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:53,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:53,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:49:53,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f731f92a-e073-4527-a98a-f5cc4ee57ad8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:49:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:49:54,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:49:54,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:49:54,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543998446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1415054202] [2022-11-03 02:49:54,402 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-03 02:49:54,403 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:49:54,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:49:54,404 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:49:54,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:50:51,699 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:50:52,046 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:50:52,495 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 457 for LOIs [2022-11-03 02:51:17,751 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 455 for LOIs [2022-11-03 02:51:35,979 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 240 for LOIs [2022-11-03 02:51:36,012 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2022-11-03 02:51:36,054 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2022-11-03 02:51:36,819 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-03 02:51:37,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:51:52,253 WARN L234 SmtUtils]: Spent 6.41s 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 02:51:59,241 WARN L234 SmtUtils]: Spent 6.82s 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 02:52:23,501 WARN L234 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 492 DAG size of output: 297 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:31,166 WARN L234 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 504 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:37,978 WARN L234 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 514 DAG size of output: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:06,566 WARN L234 SmtUtils]: Spent 26.92s on a formula simplification. DAG size of input: 603 DAG size of output: 478 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)