./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta --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 78f09f881cef26d11456f7baabcb58a727aa2f4d67cef56365b42a1e169c7203 --- 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-dbf71c6-m [2022-10-17 17:40:31,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:31,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:31,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:31,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:31,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:31,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:31,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:31,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:31,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:31,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:31,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:31,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:31,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:31,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:31,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:31,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:31,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:31,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:31,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:31,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:31,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:31,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:31,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:31,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:31,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:31,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:31,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:31,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:31,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:31,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:31,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:31,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:31,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:31,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:31,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:31,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:31,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:31,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:31,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:31,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:31,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:40:31,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:31,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:31,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:31,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:31,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:31,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:31,659 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:31,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:31,659 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:31,659 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:31,660 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:31,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:31,661 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:31,661 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:31,661 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:31,661 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:31,662 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:31,662 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:31,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:31,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:40:31,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:31,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:40:31,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:31,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:31,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:31,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:31,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:40:31,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:31,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:31,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:31,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:31,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:31,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:31,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:31,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:31,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:31,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:31,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:31,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:31,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:31,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:31,672 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_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78f09f881cef26d11456f7baabcb58a727aa2f4d67cef56365b42a1e169c7203 [2022-10-17 17:40:31,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:31,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:31,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:31,939 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:31,940 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:31,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec3_product33.cil.c [2022-10-17 17:40:32,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/data/a03257d8c/e1f63093bac841b892c55fb2a2f42d95/FLAGf4a47dc82 [2022-10-17 17:40:32,677 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:32,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/sv-benchmarks/c/product-lines/email_spec3_product33.cil.c [2022-10-17 17:40:32,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/data/a03257d8c/e1f63093bac841b892c55fb2a2f42d95/FLAGf4a47dc82 [2022-10-17 17:40:32,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/data/a03257d8c/e1f63093bac841b892c55fb2a2f42d95 [2022-10-17 17:40:32,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:32,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:32,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:32,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:32,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:32,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:32" (1/1) ... [2022-10-17 17:40:32,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d126a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:32, skipping insertion in model container [2022-10-17 17:40:32,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:32" (1/1) ... [2022-10-17 17:40:32,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:32,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:33,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/sv-benchmarks/c/product-lines/email_spec3_product33.cil.c[65706,65719] [2022-10-17 17:40:33,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:33,744 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:33,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/sv-benchmarks/c/product-lines/email_spec3_product33.cil.c[65706,65719] [2022-10-17 17:40:33,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:33,927 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:33,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33 WrapperNode [2022-10-17 17:40:33,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:33,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:33,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:33,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:33,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:33,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,067 INFO L138 Inliner]: procedures = 135, calls = 237, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1102 [2022-10-17 17:40:34,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:34,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:34,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:34,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:34,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:34,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:34,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:34,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:34,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (1/1) ... [2022-10-17 17:40:34,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:34,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:34,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 17:40:34,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 17:40:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 17:40:34,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 17:40:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 17:40:34,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 17:40:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:40:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:40:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:40:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:40:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:40:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:40:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:40:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:40:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 17:40:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 17:40:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:40:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:40:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:40:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:40:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:40:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:40:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:40:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-10-17 17:40:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-10-17 17:40:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:40:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:40:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:40:34,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:40:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 17:40:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 17:40:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:40:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:40:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 17:40:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 17:40:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:40:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:40:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:40:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:40:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 17:40:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 17:40:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:40:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:40:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 17:40:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 17:40:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:40:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:40:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:40:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:40:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:40:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:40:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:40:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:34,606 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:34,609 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:35,648 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:36,288 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:36,289 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:40:36,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:36 BoogieIcfgContainer [2022-10-17 17:40:36,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:36,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:36,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:36,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:36,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:32" (1/3) ... [2022-10-17 17:40:36,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796ec64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:36, skipping insertion in model container [2022-10-17 17:40:36,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:33" (2/3) ... [2022-10-17 17:40:36,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796ec64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:36, skipping insertion in model container [2022-10-17 17:40:36,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:36" (3/3) ... [2022-10-17 17:40:36,305 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.c [2022-10-17 17:40:36,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:36,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:40:36,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:36,415 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;@155fa003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:36,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:40:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 133 states have internal predecessors, (166), 68 states have call successors, (68), 25 states have call predecessors, (68), 25 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-10-17 17:40:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-17 17:40:36,442 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:36,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:36,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1424100515, now seen corresponding path program 1 times [2022-10-17 17:40:36,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:36,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185444528] [2022-10-17 17:40:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:36,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:40:36,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:36,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185444528] [2022-10-17 17:40:36,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185444528] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:36,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:36,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:36,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111122574] [2022-10-17 17:40:36,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:36,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:40:36,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:40:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:36,981 INFO L87 Difference]: Start difference. First operand has 222 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 133 states have internal predecessors, (166), 68 states have call successors, (68), 25 states have call predecessors, (68), 25 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:40:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:37,194 INFO L93 Difference]: Finished difference Result 360 states and 482 transitions. [2022-10-17 17:40:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:40:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 83 [2022-10-17 17:40:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:37,215 INFO L225 Difference]: With dead ends: 360 [2022-10-17 17:40:37,216 INFO L226 Difference]: Without dead ends: 218 [2022-10-17 17:40:37,228 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 [2022-10-17 17:40:37,233 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:37,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 256 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-10-17 17:40:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-10-17 17:40:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 125 states have (on average 1.28) internal successors, (160), 129 states have internal predecessors, (160), 68 states have call successors, (68), 25 states have call predecessors, (68), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-10-17 17:40:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 293 transitions. [2022-10-17 17:40:37,328 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 293 transitions. Word has length 83 [2022-10-17 17:40:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:37,336 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 293 transitions. [2022-10-17 17:40:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:40:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 293 transitions. [2022-10-17 17:40:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 17:40:37,351 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:37,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:37,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:37,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:37,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 186667891, now seen corresponding path program 1 times [2022-10-17 17:40:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:37,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578231737] [2022-10-17 17:40:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:37,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:40:37,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578231737] [2022-10-17 17:40:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578231737] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:37,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:40:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430997424] [2022-10-17 17:40:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:37,713 INFO L87 Difference]: Start difference. First operand 218 states and 293 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:40:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:37,845 INFO L93 Difference]: Finished difference Result 355 states and 466 transitions. [2022-10-17 17:40:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2022-10-17 17:40:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:37,850 INFO L225 Difference]: With dead ends: 355 [2022-10-17 17:40:37,850 INFO L226 Difference]: Without dead ends: 220 [2022-10-17 17:40:37,852 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 [2022-10-17 17:40:37,853 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 0 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:37,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-10-17 17:40:37,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-10-17 17:40:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 127 states have (on average 1.2755905511811023) internal successors, (162), 131 states have internal predecessors, (162), 68 states have call successors, (68), 25 states have call predecessors, (68), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-10-17 17:40:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 295 transitions. [2022-10-17 17:40:37,881 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 295 transitions. Word has length 84 [2022-10-17 17:40:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:37,882 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 295 transitions. [2022-10-17 17:40:37,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:40:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 295 transitions. [2022-10-17 17:40:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-17 17:40:37,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:37,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:37,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:40:37,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 771884099, now seen corresponding path program 1 times [2022-10-17 17:40:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:37,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379252173] [2022-10-17 17:40:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:40:38,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:38,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379252173] [2022-10-17 17:40:38,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379252173] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:38,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:38,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:40:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089949162] [2022-10-17 17:40:38,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:38,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:38,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:38,042 INFO L87 Difference]: Start difference. First operand 220 states and 295 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:40:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:38,172 INFO L93 Difference]: Finished difference Result 470 states and 649 transitions. [2022-10-17 17:40:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:38,173 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-10-17 17:40:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:38,176 INFO L225 Difference]: With dead ends: 470 [2022-10-17 17:40:38,176 INFO L226 Difference]: Without dead ends: 268 [2022-10-17 17:40:38,178 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 [2022-10-17 17:40:38,179 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 57 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:38,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 517 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-10-17 17:40:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2022-10-17 17:40:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 159 states have (on average 1.3522012578616351) internal successors, (215), 163 states have internal predecessors, (215), 79 states have call successors, (79), 25 states have call predecessors, (79), 24 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-10-17 17:40:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 370 transitions. [2022-10-17 17:40:38,205 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 370 transitions. Word has length 89 [2022-10-17 17:40:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:38,206 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 370 transitions. [2022-10-17 17:40:38,206 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:40:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 370 transitions. [2022-10-17 17:40:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-17 17:40:38,208 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:38,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:38,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:40:38,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1603292252, now seen corresponding path program 1 times [2022-10-17 17:40:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:38,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699684010] [2022-10-17 17:40:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:40:38,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:38,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699684010] [2022-10-17 17:40:38,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699684010] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:38,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006258489] [2022-10-17 17:40:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:38,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:38,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:38,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:38,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fad4ce0-1713-4519-a949-66fd2428a30b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:40:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:38,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:40:38,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:40:38,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:40:39,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006258489] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:39,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [264162560] [2022-10-17 17:40:39,032 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-10-17 17:40:39,033 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:39,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:39,044 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:39,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs