./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_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_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/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_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/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_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/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 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d --- 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 17:38:56,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:38:56,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:38:56,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:38:56,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:38:56,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:38:56,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:38:56,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:38:56,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:38:56,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:38:56,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:38:56,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:38:56,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:38:56,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:38:56,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:38:56,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:38:56,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:38:56,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:38:56,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:38:56,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:38:56,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:38:56,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:38:56,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:38:56,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:38:56,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:38:56,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:38:56,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:38:56,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:38:56,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:38:56,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:38:56,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:38:56,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:38:56,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:38:56,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:38:56,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:38:56,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:38:56,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:38:56,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:38:56,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:38:56,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:38:56,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:38:56,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:38:56,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:38:56,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:38:56,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:38:56,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:38:56,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:38:56,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:38:56,622 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:38:56,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:38:56,623 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:38:56,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:38:56,624 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:38:56,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:38:56,625 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:38:56,625 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:38:56,625 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:38:56,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:38:56,626 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:38:56,626 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:38:56,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:38:56,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:38:56,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:38:56,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:38:56,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:38:56,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:38:56,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:38:56,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:38:56,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:38:56,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:38:56,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:38:56,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:38:56,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:38:56,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:38:56,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:56,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:38:56,631 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:38:56,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:38:56,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:38:56,631 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:38:56,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:38:56,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:38:56,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:38:56,632 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_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d [2022-10-17 17:38:56,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:38:56,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:38:56,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:38:56,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:38:56,941 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:38:56,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-10-17 17:38:57,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/data/48f793632/ff1a2936ce6f425896afdd5649e553ef/FLAG4ef99b00f [2022-10-17 17:38:57,617 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:38:57,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-10-17 17:38:57,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/data/48f793632/ff1a2936ce6f425896afdd5649e553ef/FLAG4ef99b00f [2022-10-17 17:38:57,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/data/48f793632/ff1a2936ce6f425896afdd5649e553ef [2022-10-17 17:38:57,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:38:57,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:38:57,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:57,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:38:57,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:38:57,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:57" (1/1) ... [2022-10-17 17:38:57,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ed6643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:57, skipping insertion in model container [2022-10-17 17:38:57,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:57" (1/1) ... [2022-10-17 17:38:57,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:38:57,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:38:58,589 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_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-10-17 17:38:58,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:58,616 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:38:58,734 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_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-10-17 17:38:58,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:58,771 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:38:58,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58 WrapperNode [2022-10-17 17:38:58,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:58,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:58,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:38:58,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:38:58,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,892 INFO L138 Inliner]: procedures = 134, calls = 227, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1064 [2022-10-17 17:38:58,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:58,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:38:58,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:38:58,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:38:58,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,988 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:58,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:59,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:38:59,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:38:59,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:38:59,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:38:59,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (1/1) ... [2022-10-17 17:38:59,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:59,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:59,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:38:59,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:38:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 17:38:59,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 17:38:59,076 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 17:38:59,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 17:38:59,076 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 17:38:59,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 17:38:59,076 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:38:59,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:38:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:38:59,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:38:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:38:59,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:38:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:38:59,078 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:38:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 17:38:59,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 17:38:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:38:59,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:38:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:38:59,079 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:38:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:38:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:38:59,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:38:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-10-17 17:38:59,080 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-10-17 17:38:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:38:59,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:38:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:38:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:38:59,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:38:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 17:38:59,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 17:38:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:38:59,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:38:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:38:59,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:38:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:38:59,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:38:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 17:38:59,082 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 17:38:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:38:59,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:38:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 17:38:59,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 17:38:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:38:59,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:38:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:38:59,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:38:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:38:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:38:59,084 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:38:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:38:59,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:38:59,362 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:38:59,365 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:00,344 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:00,924 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:00,924 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:39:00,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:00 BoogieIcfgContainer [2022-10-17 17:39:00,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:00,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:00,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:00,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:00,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:38:57" (1/3) ... [2022-10-17 17:39:00,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a62ad89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:00, skipping insertion in model container [2022-10-17 17:39:00,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:58" (2/3) ... [2022-10-17 17:39:00,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a62ad89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:00, skipping insertion in model container [2022-10-17 17:39:00,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:00" (3/3) ... [2022-10-17 17:39:00,937 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2022-10-17 17:39:00,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:00,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:01,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:01,033 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;@6c82d212, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:01,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-10-17 17:39:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-17 17:39:01,055 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:01,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2022-10-17 17:39:01,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 772251337, now seen corresponding path program 1 times [2022-10-17 17:39:01,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:01,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974344885] [2022-10-17 17:39:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:01,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:39:01,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:01,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974344885] [2022-10-17 17:39:01,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974344885] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:01,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:01,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487164927] [2022-10-17 17:39:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:01,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:39:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:01,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:39:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:01,612 INFO L87 Difference]: Start difference. First operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:39:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:01,810 INFO L93 Difference]: Finished difference Result 335 states and 442 transitions. [2022-10-17 17:39:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:39:01,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2022-10-17 17:39:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:01,830 INFO L225 Difference]: With dead ends: 335 [2022-10-17 17:39:01,830 INFO L226 Difference]: Without dead ends: 206 [2022-10-17 17:39:01,840 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 17:39:01,845 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:01,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-10-17 17:39:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-10-17 17:39:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-10-17 17:39:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2022-10-17 17:39:01,920 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 88 [2022-10-17 17:39:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:01,922 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-10-17 17:39:01,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:39:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2022-10-17 17:39:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-17 17:39:01,928 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:01,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2022-10-17 17:39:01,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:39:01,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:01,930 INFO L85 PathProgramCache]: Analyzing trace with hash 158684575, now seen corresponding path program 1 times [2022-10-17 17:39:01,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:01,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096599299] [2022-10-17 17:39:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:01,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:39:02,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:02,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096599299] [2022-10-17 17:39:02,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096599299] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:02,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:02,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:02,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227322402] [2022-10-17 17:39:02,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:02,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:02,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:02,259 INFO L87 Difference]: Start difference. First operand 206 states and 275 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:39:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:02,433 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2022-10-17 17:39:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 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 17:39:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:02,443 INFO L225 Difference]: With dead ends: 331 [2022-10-17 17:39:02,443 INFO L226 Difference]: Without dead ends: 208 [2022-10-17 17:39:02,449 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 17:39:02,451 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:02,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-10-17 17:39:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-10-17 17:39:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 124 states have internal predecessors, (154), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-10-17 17:39:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 277 transitions. [2022-10-17 17:39:02,508 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 277 transitions. Word has length 89 [2022-10-17 17:39:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:02,510 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 277 transitions. [2022-10-17 17:39:02,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:39:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 277 transitions. [2022-10-17 17:39:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 17:39:02,518 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:02,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2022-10-17 17:39:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:39:02,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1040893683, now seen corresponding path program 1 times [2022-10-17 17:39:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:02,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381656694] [2022-10-17 17:39:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:39:02,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:02,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381656694] [2022-10-17 17:39:02,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381656694] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:02,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:02,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19225547] [2022-10-17 17:39:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:02,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:02,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:02,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:02,743 INFO L87 Difference]: Start difference. First operand 208 states and 277 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:39:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:02,922 INFO L93 Difference]: Finished difference Result 446 states and 613 transitions. [2022-10-17 17:39:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-10-17 17:39:02,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:02,930 INFO L225 Difference]: With dead ends: 446 [2022-10-17 17:39:02,930 INFO L226 Difference]: Without dead ends: 256 [2022-10-17 17:39:02,934 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 17:39:02,939 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 57 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:02,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 485 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-10-17 17:39:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-10-17 17:39:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 156 states have internal predecessors, (207), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-10-17 17:39:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2022-10-17 17:39:02,971 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 94 [2022-10-17 17:39:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:02,971 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2022-10-17 17:39:02,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-17 17:39:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2022-10-17 17:39:02,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-17 17:39:02,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:02,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2022-10-17 17:39:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:39:02,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1815040580, now seen corresponding path program 1 times [2022-10-17 17:39:02,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:02,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019164103] [2022-10-17 17:39:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:39:03,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:03,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019164103] [2022-10-17 17:39:03,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019164103] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:03,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622099769] [2022-10-17 17:39:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:03,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:03,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:03,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:03,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f35c6e-2242-48ce-b0c5-3ade4e409ebc/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:39:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:03,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:39:03,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:39:03,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:39:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622099769] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:03,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439433824] [2022-10-17 17:39:03,874 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-10-17 17:39:03,874 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:03,878 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:03,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:03,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs