./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS --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 e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf --- 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-8393723 [2022-11-19 08:24:05,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:24:05,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:24:05,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:24:05,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:24:05,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:24:05,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:24:05,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:24:05,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:24:05,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:24:05,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:24:05,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:24:05,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:24:05,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:24:05,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:24:05,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:24:05,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:24:05,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:24:05,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:24:05,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:24:05,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:24:05,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:24:05,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:24:05,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:24:05,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:24:05,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:24:05,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:24:05,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:24:05,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:24:05,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:24:05,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:24:05,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:24:05,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:24:05,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:24:05,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:24:05,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:24:05,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:24:05,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:24:05,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:24:05,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:24:05,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:24:05,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:24:05,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:24:05,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:24:05,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:24:05,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:24:05,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:24:05,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:24:05,609 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:24:05,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:24:05,609 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:24:05,610 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:24:05,611 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:24:05,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:24:05,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:24:05,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:24:05,612 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:24:05,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:24:05,613 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:24:05,613 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:24:05,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:24:05,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:24:05,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:24:05,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:24:05,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:24:05,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:24:05,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:24:05,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:24:05,618 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:24:05,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:24:05,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:24:05,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:24:05,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:24:05,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:24:05,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:24:05,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:24:05,621 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:24:05,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:24:05,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:24:05,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:24:05,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:24:05,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:24:05,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:24:05,623 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_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf [2022-11-19 08:24:05,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:24:05,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:24:05,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:24:05,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:24:05,958 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:24:05,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-11-19 08:24:06,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/data/0a3255c94/f11b17d3e4004fcc959bc3bcef121d67/FLAG8f760832c [2022-11-19 08:24:06,661 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:24:06,668 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-11-19 08:24:06,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/data/0a3255c94/f11b17d3e4004fcc959bc3bcef121d67/FLAG8f760832c [2022-11-19 08:24:06,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/data/0a3255c94/f11b17d3e4004fcc959bc3bcef121d67 [2022-11-19 08:24:06,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:24:06,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:24:06,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:24:06,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:24:06,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:24:06,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:24:06" (1/1) ... [2022-11-19 08:24:06,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655a9bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:06, skipping insertion in model container [2022-11-19 08:24:06,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:24:06" (1/1) ... [2022-11-19 08:24:06,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:24:07,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:24:07,682 WARN L234 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_bb172937-1051-47a2-b1b7-5420cd010afb/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-11-19 08:24:07,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:24:07,696 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:24:07,793 WARN L234 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_bb172937-1051-47a2-b1b7-5420cd010afb/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-11-19 08:24:07,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:24:07,824 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:24:07,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07 WrapperNode [2022-11-19 08:24:07,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:24:07,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:24:07,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:24:07,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:24:07,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,924 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 57, calls inlined = 49, statements flattened = 874 [2022-11-19 08:24:07,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:24:07,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:24:07,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:24:07,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:24:07,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:24:07,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:24:07,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:24:07,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:24:07,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (1/1) ... [2022-11-19 08:24:07,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:24:08,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:24:08,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:24:08,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:24:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 08:24:08,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 08:24:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 08:24:08,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 08:24:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 08:24:08,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 08:24:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 08:24:08,071 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 08:24:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 08:24:08,071 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 08:24:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 08:24:08,071 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 08:24:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 08:24:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 08:24:08,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 08:24:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 08:24:08,072 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 08:24:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:24:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 08:24:08,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 08:24:08,073 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 08:24:08,073 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 08:24:08,073 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 08:24:08,073 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 08:24:08,073 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 08:24:08,073 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 08:24:08,074 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-19 08:24:08,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-19 08:24:08,074 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 08:24:08,074 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 08:24:08,074 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 08:24:08,074 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 08:24:08,074 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 08:24:08,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 08:24:08,075 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 08:24:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 08:24:08,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:24:08,075 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 08:24:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 08:24:08,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:24:08,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:24:08,298 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:24:08,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:24:09,268 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:24:09,789 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:24:09,789 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:24:09,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:24:09 BoogieIcfgContainer [2022-11-19 08:24:09,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:24:09,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:24:09,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:24:09,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:24:09,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:24:06" (1/3) ... [2022-11-19 08:24:09,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3930a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:24:09, skipping insertion in model container [2022-11-19 08:24:09,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:24:07" (2/3) ... [2022-11-19 08:24:09,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3930a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:24:09, skipping insertion in model container [2022-11-19 08:24:09,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:24:09" (3/3) ... [2022-11-19 08:24:09,803 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2022-11-19 08:24:09,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:24:09,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:24:09,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:24:09,913 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;@2317ad81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:24:09,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:24:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-19 08:24:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 08:24:09,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:24:09,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:24:09,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:24:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:24:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash 228193760, now seen corresponding path program 1 times [2022-11-19 08:24:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:24:09,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253458573] [2022-11-19 08:24:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:09,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:24:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:24:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:24:10,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:24:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253458573] [2022-11-19 08:24:10,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253458573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:24:10,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:24:10,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:24:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387310480] [2022-11-19 08:24:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:24:10,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:24:10,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:24:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:24:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:24:10,390 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:24:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:24:10,504 INFO L93 Difference]: Finished difference Result 223 states and 292 transitions. [2022-11-19 08:24:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:24:10,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-11-19 08:24:10,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:24:10,517 INFO L225 Difference]: With dead ends: 223 [2022-11-19 08:24:10,517 INFO L226 Difference]: Without dead ends: 150 [2022-11-19 08:24:10,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:24:10,554 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:24:10,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:24:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-19 08:24:10,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-19 08:24:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 91 states have internal predecessors, (119), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-19 08:24:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2022-11-19 08:24:10,612 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 68 [2022-11-19 08:24:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:24:10,614 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2022-11-19 08:24:10,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:24:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2022-11-19 08:24:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 08:24:10,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:24:10,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:24:10,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:24:10,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:24:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:24:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 250701991, now seen corresponding path program 1 times [2022-11-19 08:24:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:24:10,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532536310] [2022-11-19 08:24:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:24:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:24:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:24:10,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:24:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532536310] [2022-11-19 08:24:10,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532536310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:24:10,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:24:10,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:24:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703379834] [2022-11-19 08:24:10,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:24:10,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:24:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:24:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:24:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:24:10,938 INFO L87 Difference]: Start difference. First operand 150 states and 200 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:24:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:24:11,080 INFO L93 Difference]: Finished difference Result 219 states and 280 transitions. [2022-11-19 08:24:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:24:11,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-11-19 08:24:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:24:11,083 INFO L225 Difference]: With dead ends: 219 [2022-11-19 08:24:11,083 INFO L226 Difference]: Without dead ends: 152 [2022-11-19 08:24:11,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:24:11,086 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:24:11,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:24:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-19 08:24:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-19 08:24:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-19 08:24:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 202 transitions. [2022-11-19 08:24:11,113 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 202 transitions. Word has length 69 [2022-11-19 08:24:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:24:11,115 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 202 transitions. [2022-11-19 08:24:11,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:24:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 202 transitions. [2022-11-19 08:24:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 08:24:11,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:24:11,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:24:11,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:24:11,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:24:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:24:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash 986992234, now seen corresponding path program 1 times [2022-11-19 08:24:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:24:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558464363] [2022-11-19 08:24:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:24:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:24:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:24:11,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:24:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558464363] [2022-11-19 08:24:11,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558464363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:24:11,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:24:11,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:24:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502519867] [2022-11-19 08:24:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:24:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:24:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:24:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:24:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:24:11,335 INFO L87 Difference]: Start difference. First operand 152 states and 202 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:24:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:24:11,496 INFO L93 Difference]: Finished difference Result 334 states and 463 transitions. [2022-11-19 08:24:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:24:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-19 08:24:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:24:11,503 INFO L225 Difference]: With dead ends: 334 [2022-11-19 08:24:11,504 INFO L226 Difference]: Without dead ends: 200 [2022-11-19 08:24:11,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:24:11,516 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:24:11,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 353 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:24:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-19 08:24:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2022-11-19 08:24:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.403225806451613) internal successors, (174), 125 states have internal predecessors, (174), 52 states have call successors, (52), 18 states have call predecessors, (52), 18 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-19 08:24:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 277 transitions. [2022-11-19 08:24:11,539 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 277 transitions. Word has length 74 [2022-11-19 08:24:11,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:24:11,540 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 277 transitions. [2022-11-19 08:24:11,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:24:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 277 transitions. [2022-11-19 08:24:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 08:24:11,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:24:11,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:24:11,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:24:11,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:24:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:24:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash 430471120, now seen corresponding path program 1 times [2022-11-19 08:24:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:24:11,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078084977] [2022-11-19 08:24:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:24:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:24:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:24:11,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:24:11,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078084977] [2022-11-19 08:24:11,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078084977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:24:11,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747778474] [2022-11-19 08:24:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:11,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:24:11,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:24:11,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:24:11,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:24:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:24:12,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:24:12,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:24:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:24:12,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:24:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:24:12,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747778474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:24:12,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987100049] [2022-11-19 08:24:12,318 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-19 08:24:12,318 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:24:12,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:24:12,330 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:24:12,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:24:54,109 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 08:24:54,522 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:24:55,018 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-19 08:24:57,345 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 08:24:57,409 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-19 08:25:08,865 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 08:25:08,899 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-19 08:25:08,951 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-19 08:25:09,706 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:25:22,463 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:27,915 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:56,943 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 498 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:04,426 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 508 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:25,520 WARN L233 SmtUtils]: Spent 20.73s on a formula simplification. DAG size of input: 589 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:46,522 WARN L233 SmtUtils]: Spent 20.60s on a formula simplification. DAG size of input: 591 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:27:34,735 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 567 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:27:47,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1987100049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:47,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:47,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-19 08:27:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192294617] [2022-11-19 08:27:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-19 08:27:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-19 08:27:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 08:27:47,788 INFO L87 Difference]: Start difference. First operand 195 states and 277 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-19 08:28:00,984 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:11,364 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:22,227 WARN L233 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 589 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:33,302 WARN L233 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 587 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:44,348 WARN L233 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 589 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:55,322 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:08,818 WARN L233 SmtUtils]: Spent 12.59s on a formula simplification. DAG size of input: 590 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:19,611 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 586 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:40,404 INFO L93 Difference]: Finished difference Result 552 states and 849 transitions. [2022-11-19 08:29:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 08:29:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-11-19 08:29:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:40,426 INFO L225 Difference]: With dead ends: 552 [2022-11-19 08:29:40,427 INFO L226 Difference]: Without dead ends: 375 [2022-11-19 08:29:40,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 244.8s TimeCoverageRelationStatistics Valid=193, Invalid=2887, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 08:29:40,433 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 264 mSDsluCounter, 4027 mSDsCounter, 0 mSdLazyCounter, 5373 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 5400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:40,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 4232 Invalid, 5400 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [27 Valid, 5373 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2022-11-19 08:29:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-19 08:29:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 309. [2022-11-19 08:29:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 219 states have (on average 1.452054794520548) internal successors, (318), 221 states have internal predecessors, (318), 65 states have call successors, (65), 25 states have call predecessors, (65), 24 states have return successors, (65), 62 states have call predecessors, (65), 64 states have call successors, (65) [2022-11-19 08:29:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 448 transitions. [2022-11-19 08:29:40,731 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 448 transitions. Word has length 75 [2022-11-19 08:29:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:40,734 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 448 transitions. [2022-11-19 08:29:40,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-19 08:29:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 448 transitions. [2022-11-19 08:29:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 08:29:40,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:40,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:40,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:40,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:29:40,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1417034234, now seen corresponding path program 1 times [2022-11-19 08:29:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:40,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337391641] [2022-11-19 08:29:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:29:41,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337391641] [2022-11-19 08:29:41,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337391641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:29:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528888673] [2022-11-19 08:29:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:41,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:29:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:29:41,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:29:41,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:29:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:29:41,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:29:41,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:29:41,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528888673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:41,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1568957610] [2022-11-19 08:29:41,561 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-19 08:29:41,561 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:29:41,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:29:41,563 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:29:41,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:30:16,649 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 08:30:17,015 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-19 08:30:18,851 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 08:30:18,895 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:30:19,195 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-19 08:30:54,564 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 08:30:54,609 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-19 08:30:54,656 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-11-19 08:30:55,547 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 437 for LOIs [2022-11-19 08:30:55,838 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 251 for LOIs [2022-11-19 08:30:55,880 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:31:09,398 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:31:15,181 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:31:45,312 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 498 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:31:52,813 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 508 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:13,977 WARN L233 SmtUtils]: Spent 20.82s on a formula simplification. DAG size of input: 587 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:34,606 WARN L233 SmtUtils]: Spent 20.26s on a formula simplification. DAG size of input: 589 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:43,379 WARN L233 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 564 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:52,205 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 560 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:33:59,330 WARN L233 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 609 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:05,935 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 609 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:17,346 WARN L233 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 607 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:29,748 WARN L233 SmtUtils]: Spent 11.56s on a formula simplification. DAG size of input: 643 DAG size of output: 513 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:44,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1568957610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:44,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:34:44,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-19 08:34:44,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618788356] [2022-11-19 08:34:44,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:44,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-19 08:34:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-19 08:34:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3125, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 08:34:44,959 INFO L87 Difference]: Start difference. First operand 309 states and 448 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-19 08:34:57,937 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:35:08,190 WARN L233 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:35:20,274 WARN L233 SmtUtils]: Spent 11.56s on a formula simplification. DAG size of input: 560 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:35:32,480 WARN L233 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 558 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:35:42,838 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 588 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:35:55,124 WARN L233 SmtUtils]: Spent 11.47s on a formula simplification. DAG size of input: 555 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:36:10,322 WARN L233 SmtUtils]: Spent 14.23s on a formula simplification. DAG size of input: 562 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:36:23,188 WARN L233 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 592 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:36:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:48,735 INFO L93 Difference]: Finished difference Result 535 states and 782 transitions. [2022-11-19 08:36:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-19 08:36:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 80 [2022-11-19 08:36:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:48,739 INFO L225 Difference]: With dead ends: 535 [2022-11-19 08:36:48,739 INFO L226 Difference]: Without dead ends: 466 [2022-11-19 08:36:48,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 322.0s TimeCoverageRelationStatistics Valid=249, Invalid=4041, Unknown=0, NotChecked=0, Total=4290 [2022-11-19 08:36:48,741 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 300 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 6558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:48,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 4599 Invalid, 6570 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 6558 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-11-19 08:36:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-19 08:36:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 316. [2022-11-19 08:36:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 223 states have (on average 1.4394618834080717) internal successors, (321), 225 states have internal predecessors, (321), 66 states have call successors, (66), 27 states have call predecessors, (66), 26 states have return successors, (66), 63 states have call predecessors, (66), 65 states have call successors, (66) [2022-11-19 08:36:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 453 transitions. [2022-11-19 08:36:48,956 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 453 transitions. Word has length 80 [2022-11-19 08:36:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:48,957 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 453 transitions. [2022-11-19 08:36:48,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-19 08:36:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 453 transitions. [2022-11-19 08:36:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 08:36:48,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:48,959 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:48,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:49,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:49,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1083298468, now seen corresponding path program 1 times [2022-11-19 08:36:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:49,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254857815] [2022-11-19 08:36:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:49,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:36:49,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:49,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254857815] [2022-11-19 08:36:49,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254857815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:49,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966016429] [2022-11-19 08:36:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:49,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:49,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:49,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb172937-1051-47a2-b1b7-5420cd010afb/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:36:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:49,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:36:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:36:49,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:36:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:36:49,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966016429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:36:49,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [526920444] [2022-11-19 08:36:49,772 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-19 08:36:49,772 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:49,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:49,773 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:49,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:37:44,064 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 08:37:44,534 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 08:37:44,897 INFO L180 IcfgInterpreter]: Interpretation finished