./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product18.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_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/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_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/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_41e84265-9783-4dab-b611-675a610bb503/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 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 --- 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 17:40:50,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:50,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:50,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:50,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:50,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:50,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:50,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:50,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:50,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:50,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:50,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:50,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:50,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:50,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:50,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:50,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:50,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:50,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:50,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:50,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:50,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:50,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:50,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:50,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:50,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:50,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:50,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:50,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:50,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:50,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:50,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:50,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:50,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:50,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:50,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:50,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:50,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:50,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:50,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:50,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:50,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:40:50,912 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:50,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:50,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:50,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:50,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:50,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:50,915 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:50,916 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:50,916 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:50,916 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:50,917 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:50,917 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:50,918 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:50,918 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:50,918 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:50,918 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:50,918 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:50,919 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:50,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:50,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:40:50,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:50,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:40:50,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:50,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:50,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:50,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:50,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:40:50,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:50,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:50,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:50,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:50,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:50,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:50,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:50,924 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:50,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:50,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:50,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:50,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:50,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:50,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:50,926 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_41e84265-9783-4dab-b611-675a610bb503/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 [2022-10-17 17:40:51,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:51,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:51,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:51,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:51,272 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:51,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2022-10-17 17:40:51,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/data/cbb2c254c/50e0aae9e46347aca64dfdb5f3078a15/FLAG0ab92f561 [2022-10-17 17:40:52,031 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:52,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2022-10-17 17:40:52,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/data/cbb2c254c/50e0aae9e46347aca64dfdb5f3078a15/FLAG0ab92f561 [2022-10-17 17:40:52,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/data/cbb2c254c/50e0aae9e46347aca64dfdb5f3078a15 [2022-10-17 17:40:52,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:52,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:52,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:52,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:52,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:52,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:52" (1/1) ... [2022-10-17 17:40:52,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34daba36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:52, skipping insertion in model container [2022-10-17 17:40:52,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:52" (1/1) ... [2022-10-17 17:40:52,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:52,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:52,894 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_41e84265-9783-4dab-b611-675a610bb503/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2022-10-17 17:40:53,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:53,116 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:53,201 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_41e84265-9783-4dab-b611-675a610bb503/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2022-10-17 17:40:53,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:53,266 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:53,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53 WrapperNode [2022-10-17 17:40:53,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:53,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:53,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:53,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:53,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,419 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 57, calls inlined = 48, statements flattened = 880 [2022-10-17 17:40:53,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:53,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:53,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:53,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:53,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:53,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:53,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:53,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:53,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (1/1) ... [2022-10-17 17:40:53,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:53,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:53,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:53,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:40:53,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:40:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:40:53,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:40:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:40:53,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:40:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:40:53,682 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:40:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:40:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:40:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:40:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:40:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:40:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:40:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:40:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:40:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:40:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:40:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:40:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 17:40:53,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 17:40:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:40:53,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:40:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 17:40:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 17:40:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:40:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:40:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:40:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:40:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 17:40:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 17:40:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:40:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:40:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:40:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:40:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:40:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:40:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:40:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:40:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:53,991 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:53,994 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:54,959 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:55,478 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:55,478 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:40:55,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:55 BoogieIcfgContainer [2022-10-17 17:40:55,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:55,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:55,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:55,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:55,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:52" (1/3) ... [2022-10-17 17:40:55,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5611abd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:55, skipping insertion in model container [2022-10-17 17:40:55,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:53" (2/3) ... [2022-10-17 17:40:55,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5611abd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:55, skipping insertion in model container [2022-10-17 17:40:55,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:55" (3/3) ... [2022-10-17 17:40:55,491 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2022-10-17 17:40:55,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:55,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:40:55,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:55,580 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;@1d5a13f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:55,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:40:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 100 states have internal predecessors, (130), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-17 17:40:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:40:55,600 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:55,601 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] [2022-10-17 17:40:55,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1770540771, now seen corresponding path program 1 times [2022-10-17 17:40:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:55,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594280167] [2022-10-17 17:40:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:55,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:40:56,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:56,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594280167] [2022-10-17 17:40:56,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594280167] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:56,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:56,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881766499] [2022-10-17 17:40:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:40:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:40:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:56,168 INFO L87 Difference]: Start difference. First operand has 163 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 100 states have internal predecessors, (130), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:56,344 INFO L93 Difference]: Finished difference Result 242 states and 322 transitions. [2022-10-17 17:40:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:40:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 63 [2022-10-17 17:40:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:56,365 INFO L225 Difference]: With dead ends: 242 [2022-10-17 17:40:56,366 INFO L226 Difference]: Without dead ends: 159 [2022-10-17 17:40:56,373 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 17:40:56,378 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:56,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-10-17 17:40:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-10-17 17:40:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 96 states have internal predecessors, (124), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-10-17 17:40:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 213 transitions. [2022-10-17 17:40:56,481 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 213 transitions. Word has length 63 [2022-10-17 17:40:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 213 transitions. [2022-10-17 17:40:56,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 213 transitions. [2022-10-17 17:40:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 17:40:56,502 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:56,502 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] [2022-10-17 17:40:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:56,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -41170892, now seen corresponding path program 1 times [2022-10-17 17:40:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:56,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163437065] [2022-10-17 17:40:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:40:56,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163437065] [2022-10-17 17:40:56,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163437065] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:56,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:56,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:40:56,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220543269] [2022-10-17 17:40:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:56,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:56,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:56,851 INFO L87 Difference]: Start difference. First operand 159 states and 213 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:56,955 INFO L93 Difference]: Finished difference Result 237 states and 306 transitions. [2022-10-17 17:40:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:56,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-10-17 17:40:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:56,959 INFO L225 Difference]: With dead ends: 237 [2022-10-17 17:40:56,960 INFO L226 Difference]: Without dead ends: 161 [2022-10-17 17:40:56,962 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 17:40:56,963 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:56,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-10-17 17:40:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-10-17 17:40:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.3125) internal successors, (126), 98 states have internal predecessors, (126), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-10-17 17:40:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2022-10-17 17:40:56,985 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 64 [2022-10-17 17:40:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:56,986 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2022-10-17 17:40:56,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:56,986 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2022-10-17 17:40:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-17 17:40:56,990 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:56,990 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] [2022-10-17 17:40:56,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:40:56,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 378700902, now seen corresponding path program 1 times [2022-10-17 17:40:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081849831] [2022-10-17 17:40:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:40:57,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:57,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081849831] [2022-10-17 17:40:57,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081849831] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:57,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:57,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:40:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135617885] [2022-10-17 17:40:57,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:57,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:57,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:57,223 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:57,360 INFO L93 Difference]: Finished difference Result 352 states and 489 transitions. [2022-10-17 17:40:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 69 [2022-10-17 17:40:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:57,373 INFO L225 Difference]: With dead ends: 352 [2022-10-17 17:40:57,374 INFO L226 Difference]: Without dead ends: 209 [2022-10-17 17:40:57,381 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 17:40:57,387 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 57 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:57,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 382 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-10-17 17:40:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 204. [2022-10-17 17:40:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 128 states have (on average 1.3984375) internal successors, (179), 130 states have internal predecessors, (179), 57 states have call successors, (57), 19 states have call predecessors, (57), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-10-17 17:40:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 290 transitions. [2022-10-17 17:40:57,442 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 290 transitions. Word has length 69 [2022-10-17 17:40:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:57,444 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 290 transitions. [2022-10-17 17:40:57,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 290 transitions. [2022-10-17 17:40:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-17 17:40:57,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:57,454 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] [2022-10-17 17:40:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:40:57,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1814647100, now seen corresponding path program 1 times [2022-10-17 17:40:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:57,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700294775] [2022-10-17 17:40:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:40:57,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:57,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700294775] [2022-10-17 17:40:57,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700294775] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:57,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659431985] [2022-10-17 17:40:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:57,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:57,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:57,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:57,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e84265-9783-4dab-b611-675a610bb503/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:40:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:58,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:40:58,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:40:58,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:40:58,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659431985] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804058446] [2022-10-17 17:40:58,290 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-10-17 17:40:58,290 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:58,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:58,304 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:58,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs