./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c4f282cd51b7c35fd32c34f82b9fbd91d93e4244798e2a2790fa24fbe3843942 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:05:12,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:05:12,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:05:12,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:05:12,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:05:12,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:05:12,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:05:12,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:05:12,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:05:12,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:05:12,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:05:12,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:05:12,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:05:12,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:05:12,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:05:12,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:05:12,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:05:12,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:05:12,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:05:12,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:05:12,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:05:12,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:05:12,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:05:12,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:05:12,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:05:12,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:05:12,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:05:12,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:05:12,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:05:12,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:05:12,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:05:12,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:05:12,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:05:12,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:05:12,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:05:12,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:05:12,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:05:12,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:05:12,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:05:12,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:05:12,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:05:12,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:05:12,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:05:12,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:05:12,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:05:12,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:05:12,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:05:12,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:05:12,948 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:05:12,949 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:05:12,949 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:05:12,949 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:05:12,949 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:05:12,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:05:12,950 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:05:12,950 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:05:12,950 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:05:12,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:05:12,951 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:05:12,951 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:05:12,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:05:12,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:05:12,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:05:12,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:05:12,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:05:12,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:05:12,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:05:12,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:05:12,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:05:12,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:05:12,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:05:12,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:05:12,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:05:12,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:05:12,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:05:12,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:05:12,956 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:05:12,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:05:12,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:05:12,957 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:05:12,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:05:12,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:05:12,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:05:12,957 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_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4f282cd51b7c35fd32c34f82b9fbd91d93e4244798e2a2790fa24fbe3843942 [2022-11-16 20:05:13,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:05:13,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:05:13,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:05:13,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:05:13,305 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:05:13,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec1_product35.cil.c [2022-11-16 20:05:13,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/data/05e56cd49/93ec8ed8f0aa4165a273b76be26be5d0/FLAGfcfa39816 [2022-11-16 20:05:14,078 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:05:14,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/sv-benchmarks/c/product-lines/email_spec1_product35.cil.c [2022-11-16 20:05:14,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/data/05e56cd49/93ec8ed8f0aa4165a273b76be26be5d0/FLAGfcfa39816 [2022-11-16 20:05:14,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/data/05e56cd49/93ec8ed8f0aa4165a273b76be26be5d0 [2022-11-16 20:05:14,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:05:14,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:05:14,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:05:14,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:05:14,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:05:14,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:05:14" (1/1) ... [2022-11-16 20:05:14,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b16c37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:14, skipping insertion in model container [2022-11-16 20:05:14,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:05:14" (1/1) ... [2022-11-16 20:05:14,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:05:14,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:05:15,085 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/sv-benchmarks/c/product-lines/email_spec1_product35.cil.c[66161,66174] [2022-11-16 20:05:15,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:05:15,104 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:05:15,219 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/sv-benchmarks/c/product-lines/email_spec1_product35.cil.c[66161,66174] [2022-11-16 20:05:15,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:05:15,253 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:05:15,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15 WrapperNode [2022-11-16 20:05:15,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:05:15,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:05:15,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:05:15,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:05:15,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,379 INFO L138 Inliner]: procedures = 137, calls = 247, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1148 [2022-11-16 20:05:15,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:05:15,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:05:15,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:05:15,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:05:15,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:05:15,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:05:15,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:05:15,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:05:15,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (1/1) ... [2022-11-16 20:05:15,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:05:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:05:15,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:05:15,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:05:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-16 20:05:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-16 20:05:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 20:05:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 20:05:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 20:05:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 20:05:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 20:05:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 20:05:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 20:05:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 20:05:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 20:05:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 20:05:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-16 20:05:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-16 20:05:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 20:05:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 20:05:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-16 20:05:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-16 20:05:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 20:05:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 20:05:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 20:05:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 20:05:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-16 20:05:15,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-16 20:05:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 20:05:15,622 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 20:05:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 20:05:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 20:05:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 20:05:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-16 20:05:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-16 20:05:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 20:05:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 20:05:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:05:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-16 20:05:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-16 20:05:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-16 20:05:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-16 20:05:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 20:05:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 20:05:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 20:05:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 20:05:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 20:05:15,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 20:05:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 20:05:15,629 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 20:05:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-16 20:05:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-16 20:05:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 20:05:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 20:05:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 20:05:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 20:05:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 20:05:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 20:05:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 20:05:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 20:05:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:05:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 20:05:15,633 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 20:05:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 20:05:15,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 20:05:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:05:15,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:05:15,958 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:05:15,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:05:17,125 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:05:17,884 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:05:17,884 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:05:17,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:05:17 BoogieIcfgContainer [2022-11-16 20:05:17,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:05:17,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:05:17,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:05:17,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:05:17,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:05:14" (1/3) ... [2022-11-16 20:05:17,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb8e313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:05:17, skipping insertion in model container [2022-11-16 20:05:17,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:15" (2/3) ... [2022-11-16 20:05:17,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb8e313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:05:17, skipping insertion in model container [2022-11-16 20:05:17,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:05:17" (3/3) ... [2022-11-16 20:05:17,902 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product35.cil.c [2022-11-16 20:05:17,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:05:17,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:05:18,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:05:18,018 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;@191b9a23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:05:18,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:05:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-16 20:05:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 20:05:18,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:18,048 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:05:18,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:05:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1350226867, now seen corresponding path program 1 times [2022-11-16 20:05:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:18,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276926340] [2022-11-16 20:05:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:18,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:05:18,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276926340] [2022-11-16 20:05:18,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276926340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:18,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:18,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:05:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968966501] [2022-11-16 20:05:18,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:18,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:05:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:05:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:05:18,578 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 20:05:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:18,830 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2022-11-16 20:05:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:05:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-16 20:05:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:18,864 INFO L225 Difference]: With dead ends: 392 [2022-11-16 20:05:18,864 INFO L226 Difference]: Without dead ends: 239 [2022-11-16 20:05:18,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:05:18,875 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:18,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:05:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-16 20:05:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-16 20:05:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-16 20:05:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2022-11-16 20:05:18,980 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 71 [2022-11-16 20:05:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:18,983 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2022-11-16 20:05:18,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 20:05:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2022-11-16 20:05:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 20:05:18,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:18,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:05:18,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:05:18,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:05:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash -585574988, now seen corresponding path program 1 times [2022-11-16 20:05:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514427659] [2022-11-16 20:05:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:05:19,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514427659] [2022-11-16 20:05:19,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514427659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:19,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:19,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:05:19,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135118346] [2022-11-16 20:05:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:19,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:05:19,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:05:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:05:19,381 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 20:05:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:19,597 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2022-11-16 20:05:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:05:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-16 20:05:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:19,606 INFO L225 Difference]: With dead ends: 388 [2022-11-16 20:05:19,606 INFO L226 Difference]: Without dead ends: 241 [2022-11-16 20:05:19,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:05:19,609 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:19,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:05:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-16 20:05:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-16 20:05:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-16 20:05:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2022-11-16 20:05:19,637 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 72 [2022-11-16 20:05:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:19,638 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2022-11-16 20:05:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 20:05:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2022-11-16 20:05:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 20:05:19,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:19,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:05:19,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:05:19,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:05:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -733935069, now seen corresponding path program 1 times [2022-11-16 20:05:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:19,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685858150] [2022-11-16 20:05:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:19,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:05:19,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:19,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685858150] [2022-11-16 20:05:19,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685858150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:19,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:19,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:05:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408345063] [2022-11-16 20:05:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:05:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:05:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:05:19,833 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 20:05:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:20,022 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2022-11-16 20:05:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:05:20,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-16 20:05:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:20,025 INFO L225 Difference]: With dead ends: 517 [2022-11-16 20:05:20,026 INFO L226 Difference]: Without dead ends: 294 [2022-11-16 20:05:20,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:05:20,028 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 59 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:20,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 558 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:05:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-16 20:05:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2022-11-16 20:05:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-16 20:05:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2022-11-16 20:05:20,077 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 77 [2022-11-16 20:05:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:20,078 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2022-11-16 20:05:20,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 20:05:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2022-11-16 20:05:20,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 20:05:20,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:20,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:05:20,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:05:20,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:05:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:20,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1074708616, now seen corresponding path program 1 times [2022-11-16 20:05:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:20,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373634859] [2022-11-16 20:05:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:20,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:05:20,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373634859] [2022-11-16 20:05:20,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373634859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:05:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121756040] [2022-11-16 20:05:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:20,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:05:20,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:05:20,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:05:20,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:05:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:20,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:05:20,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:05:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:05:20,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:05:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:05:20,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121756040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:05:20,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [773952999] [2022-11-16 20:05:20,940 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-16 20:05:20,940 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:05:20,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:05:20,951 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:05:20,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:01,293 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-16 20:06:01,621 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 273 for LOIs [2022-11-16 20:06:03,913 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-16 20:06:04,005 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 20:06:04,379 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-16 20:06:08,503 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 231 for LOIs [2022-11-16 20:06:08,545 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 283 for LOIs [2022-11-16 20:06:15,316 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2022-11-16 20:06:15,396 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-16 20:06:15,446 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-16 20:06:21,431 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 258 for LOIs [2022-11-16 20:06:21,493 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:07:06,131 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 502 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:15,969 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:37,375 WARN L233 SmtUtils]: Spent 21.07s on a formula simplification. DAG size of input: 591 DAG size of output: 466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:48,101 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 567 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:53,787 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 563 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:05,207 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:12,724 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 499 DAG size of output: 289 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:55,031 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 475 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:01,506 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 477 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:16,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [773952999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:16,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:09:16,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-16 20:09:16,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135032299] [2022-11-16 20:09:16,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:16,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 20:09:16,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 20:09:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3272, Unknown=0, NotChecked=0, Total=3422 [2022-11-16 20:09:16,569 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 20:09:32,420 WARN L233 SmtUtils]: Spent 12.06s on a formula simplification. DAG size of input: 479 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:38,959 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 509 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:45,392 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 511 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:51,984 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 507 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:58,839 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 517 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:10,421 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 577 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:22,622 WARN L233 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 590 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:11:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:24,697 INFO L93 Difference]: Finished difference Result 724 states and 1076 transitions. [2022-11-16 20:11:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 20:11:24,698 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2022-11-16 20:11:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:24,702 INFO L225 Difference]: With dead ends: 724 [2022-11-16 20:11:24,702 INFO L226 Difference]: Without dead ends: 453 [2022-11-16 20:11:24,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 257.2s TimeCoverageRelationStatistics Valid=243, Invalid=5013, Unknown=0, NotChecked=0, Total=5256 [2022-11-16 20:11:24,706 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 252 mSDsluCounter, 8055 mSDsCounter, 0 mSdLazyCounter, 10024 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 8366 SdHoareTripleChecker+Invalid, 10059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 10024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:24,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 8366 Invalid, 10059 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [35 Valid, 10024 Invalid, 0 Unknown, 0 Unchecked, 45.1s Time] [2022-11-16 20:11:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-16 20:11:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 372. [2022-11-16 20:11:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 236 states have (on average 1.3389830508474576) internal successors, (316), 240 states have internal predecessors, (316), 99 states have call successors, (99), 39 states have call predecessors, (99), 36 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-16 20:11:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 513 transitions. [2022-11-16 20:11:24,928 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 513 transitions. Word has length 78 [2022-11-16 20:11:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:24,928 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 513 transitions. [2022-11-16 20:11:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 20:11:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 513 transitions. [2022-11-16 20:11:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 20:11:24,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:24,931 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:24,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:11:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:11:25,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:25,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1653731716, now seen corresponding path program 1 times [2022-11-16 20:11:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:25,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850684309] [2022-11-16 20:11:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:25,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850684309] [2022-11-16 20:11:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850684309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:25,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:11:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658154878] [2022-11-16 20:11:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:25,267 INFO L87 Difference]: Start difference. First operand 372 states and 513 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 20:11:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:25,655 INFO L93 Difference]: Finished difference Result 821 states and 1167 transitions. [2022-11-16 20:11:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:25,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-16 20:11:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:25,662 INFO L225 Difference]: With dead ends: 821 [2022-11-16 20:11:25,662 INFO L226 Difference]: Without dead ends: 496 [2022-11-16 20:11:25,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:25,665 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 57 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:25,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 575 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:11:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-16 20:11:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 489. [2022-11-16 20:11:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 322 states have (on average 1.3944099378881987) internal successors, (449), 326 states have internal predecessors, (449), 130 states have call successors, (130), 39 states have call predecessors, (130), 36 states have return successors, (129), 125 states have call predecessors, (129), 129 states have call successors, (129) [2022-11-16 20:11:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 708 transitions. [2022-11-16 20:11:25,909 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 708 transitions. Word has length 83 [2022-11-16 20:11:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:25,910 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 708 transitions. [2022-11-16 20:11:25,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 20:11:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 708 transitions. [2022-11-16 20:11:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 20:11:25,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:25,914 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:25,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:11:25,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1393507940, now seen corresponding path program 1 times [2022-11-16 20:11:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:25,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525863563] [2022-11-16 20:11:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:26,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525863563] [2022-11-16 20:11:26,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525863563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:11:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474718731] [2022-11-16 20:11:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:26,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:11:26,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:11:26,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:11:26,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:11:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:26,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:11:26,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:11:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:26,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:11:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474718731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:11:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609277782] [2022-11-16 20:11:26,574 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-16 20:11:26,574 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:11:26,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:11:26,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:11:26,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:12:17,611 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 20:12:17,934 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-16 20:12:18,250 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:12:36,847 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:05,202 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 502 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:14,882 WARN L233 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:30,373 WARN L233 SmtUtils]: Spent 15.18s on a formula simplification. DAG size of input: 583 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:45,939 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 553 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:54,181 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 584 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:54,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1609277782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:54,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:13:54,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-16 20:13:54,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452959562] [2022-11-16 20:13:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:54,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 20:13:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:54,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 20:13:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-16 20:13:54,385 INFO L87 Difference]: Start difference. First operand 489 states and 708 transitions. Second operand has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-16 20:14:06,654 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 508 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:12,689 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 513 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:18,799 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 519 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:24,801 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 515 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:31,069 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 521 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:37,248 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 517 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:43,629 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 522 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:14:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:14:56,240 INFO L93 Difference]: Finished difference Result 937 states and 1399 transitions. [2022-11-16 20:14:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 20:14:56,241 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 84 [2022-11-16 20:14:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:14:56,245 INFO L225 Difference]: With dead ends: 937 [2022-11-16 20:14:56,245 INFO L226 Difference]: Without dead ends: 566 [2022-11-16 20:14:56,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 148.6s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 20:14:56,248 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 161 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:14:56,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 3983 Invalid, 2134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-16 20:14:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-16 20:14:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 501. [2022-11-16 20:14:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 332 states have (on average 1.394578313253012) internal successors, (463), 336 states have internal predecessors, (463), 131 states have call successors, (131), 40 states have call predecessors, (131), 37 states have return successors, (130), 126 states have call predecessors, (130), 130 states have call successors, (130) [2022-11-16 20:14:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 724 transitions. [2022-11-16 20:14:56,572 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 724 transitions. Word has length 84 [2022-11-16 20:14:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:14:56,573 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 724 transitions. [2022-11-16 20:14:56,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-16 20:14:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 724 transitions. [2022-11-16 20:14:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 20:14:56,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:56,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:14:56,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:14:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 20:14:56,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:14:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 61968666, now seen corresponding path program 1 times [2022-11-16 20:14:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:56,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121924411] [2022-11-16 20:14:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:14:57,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:57,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121924411] [2022-11-16 20:14:57,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121924411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:14:57,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360364486] [2022-11-16 20:14:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:57,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:14:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:14:57,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:14:57,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:14:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:57,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:14:57,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:14:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:14:57,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:14:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:14:57,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360364486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:14:57,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899403488] [2022-11-16 20:14:57,498 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-16 20:14:57,499 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:14:57,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:14:57,499 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:14:57,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:15:42,475 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 20:15:42,795 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-16 20:15:42,863 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 422 for LOIs [2022-11-16 20:15:43,166 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-11-16 20:15:43,232 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 20:15:43,569 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:16:01,820 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:15,336 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 468 DAG size of output: 277 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:30,635 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 502 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:40,329 WARN L233 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:54,272 WARN L233 SmtUtils]: Spent 13.61s on a formula simplification. DAG size of input: 623 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:09,127 WARN L233 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 533 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:20,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1899403488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:17:20,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:17:20,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-16 20:17:20,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830467697] [2022-11-16 20:17:20,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:17:20,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 20:17:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:17:20,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 20:17:20,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 20:17:20,639 INFO L87 Difference]: Start difference. First operand 501 states and 724 transitions. Second operand has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-16 20:17:29,952 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 564 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:36,017 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 508 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:42,100 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 512 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:48,307 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 514 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:18:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:18:13,780 INFO L93 Difference]: Finished difference Result 958 states and 1430 transitions. [2022-11-16 20:18:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 20:18:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) Word has length 87 [2022-11-16 20:18:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:18:13,787 INFO L225 Difference]: With dead ends: 958 [2022-11-16 20:18:13,787 INFO L226 Difference]: Without dead ends: 587 [2022-11-16 20:18:13,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 131.7s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 20:18:13,791 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 133 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:18:13,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 4616 Invalid, 4031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2022-11-16 20:18:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-16 20:18:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 537. [2022-11-16 20:18:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 362 states have (on average 1.3950276243093922) internal successors, (505), 366 states have internal predecessors, (505), 134 states have call successors, (134), 43 states have call predecessors, (134), 40 states have return successors, (133), 129 states have call predecessors, (133), 133 states have call successors, (133) [2022-11-16 20:18:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 772 transitions. [2022-11-16 20:18:14,080 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 772 transitions. Word has length 87 [2022-11-16 20:18:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:18:14,080 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 772 transitions. [2022-11-16 20:18:14,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-16 20:18:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 772 transitions. [2022-11-16 20:18:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 20:18:14,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:14,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:18:14,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:18:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 20:18:14,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:18:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 5529302, now seen corresponding path program 1 times [2022-11-16 20:18:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:14,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566560852] [2022-11-16 20:18:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:18:14,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566560852] [2022-11-16 20:18:14,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566560852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:18:14,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916186310] [2022-11-16 20:18:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:14,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:18:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:18:14,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:18:14,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86b7871-f82f-4b57-ba06-ff4574d2eac2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:18:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:14,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:18:14,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:18:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:18:14,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:18:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:18:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916186310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:18:14,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729908945] [2022-11-16 20:18:14,916 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-16 20:18:14,916 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:18:14,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:18:14,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:18:14,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs